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Message-ID: <CAK00qKA5up+8gXxiXs2+NMtAKiqkK=2dDcaWfYztnv2XmqKeyw@mail.gmail.com> Date: Fri, 5 Jul 2024 18:53:48 +0800 From: Victor Shih <victorshihgli@...il.com> To: ulf.hansson@...aro.org Cc: Adrian Hunter <adrian.hunter@...el.com>, linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org, benchuanggli@...il.com, HL.Liu@...esyslogic.com.tw, Greg.tu@...esyslogic.com.tw, dlunev@...omium.org, Victor Shih <victor.shih@...esyslogic.com.tw> Subject: Re: [PATCH V17 00/22] Add support UHS-II for GL9755 and GL9767 Hi, Ulf Excuse me, please help review this series of patches. If you already have a closer look at a paragraph in the series, could you let me know your comments first, let me check it first. I look forward to your reply. Thanks, Victor Shih On Fri, Jul 5, 2024 at 6:25 PM Victor Shih <victorshihgli@...il.com> wrote: > > On Sat, Jun 29, 2024 at 1:17 AM Adrian Hunter <adrian.hunter@...el.com> wrote: > > > > On 20/06/24 13:44, Victor Shih wrote: > > > From: Victor Shih <victor.shih@...esyslogic.com.tw> > > > > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 and GL9767 > > > UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#7: for core > > > patch#8-#20: for sdhci > > > patch#21: for GL9755 > > > patch#22: for GL9767 > > > > > > Changes in v17 (June. 20, 2024) > > > * Rebase on latest mmc/next. > > > * Drop patch#8 of uhs2 patches series v16. > > > * Patch#11: Move the sdhci_uhs2_reset_cmd_data() to the other patch > > > it was used for the first time. > > > * Patch#12: Export sdhci_uhs2_set_power() function. > > > * Patch#16: Add new parameter to __sdhci_finish_data_common(). > > > * Patch#17: Add sdhci_uhs2_reset_cmd_data() and sdhci_uhs2_needs_reset() to > > > resolve the data error or cmd error. > > > * Patch#21: Rname gl9755_overcurrent_event_enable() to > > > sdhci_gli_overcurrent_event_enable(). > > > * Patch#22: Use mmc_card_uhs2() to simplify the code in the > > > sdhci_gl9767_reset(). > > > Use mmc_card_uhs2() to simplify the code in the > > > sdhci_gl9767_set_power(). > > > Add sdhci_gli_overcurrent_event_enable() to > > > sdhci_gl9767_set_power(). > > > > The changes in V17 look fine. > > > > I have no further comments for SDHCI at this stage. > > > > AFAICT because SD-TRAN is used, CMD12 is OK to abort > > data transfers if necessary. > > > > Can you confirm that the current patchset is working > > on your platform? > > Hi, Adrian > > Yes, please refer to the test data below. > > Tests > ===== > Ran 'dd' command to evaluate the performance: > (SanDisk UHS-II card on GL9755 controller) > Read Write > UHS-II disabled (UHS-I): 84.8MB/s 50.0MB/s > UHS-II enabled : 199MB/s 76.9MB/s > > (SanDisk UHS-II card on GL9767 controller) > Read Write > UHS-II disabled (UHS-I): 84.6MB/s 49.6MB/s > UHS-II enabled : 155MB/s 67.4MB/s > > Thanks, Victor Shih > > > > > In other respects you probably need to get some feedback > > from Ulf. > > > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20240522110909.10060-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v16 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 and GL9767 > > > UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#8: for core > > > patch#9-#21: for sdhci > > > patch#22: for GL9755 > > > patch#23: for GL9767 > > > > > > Changes in v16 (May. 22, 2024) > > > * rebased to the linux-kernel-v6.9.0-rc2 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V14 00/21] Add support UHS-II for GL9755. > > > * Patch#8: Separate the Error Recovery mechanism from patch#7 to patch#8. > > > * Patch#16: Remove irrelevant definition in the sdhci_calc_timeout_uhs2(). > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20240123062827.8525-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v15 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 and GL9767 > > > UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#7: for core > > > patch#8-#20: for sdhci > > > patch#21: for GL9755 > > > patch#22: for GL9767 > > > > > > Changes in v15 (April. 22, 2024) > > > * rebased to the linux-kernel-v6.9.0-rc2 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V14 00/21] Add support UHS-II for GL9755. > > > * Patch#07: Move struct uhs2_command uhs2_cmd to struct mmc_request and > > > modify whatever other changers to make it work. > > > Refer the SD Host Controller Standard Specification > > > Section 3.10 to add Error Recovery mechanism to recover > > > the command error. > > > * Patch#11: Refer the SD Host Controller Standard Specification > > > Section 3.10 to add reset command data mechanism. > > > * Patch#15: Resolve merge conflicts and reduce unnecessary line breaks. > > > * Patch#16: Adjust the parameters used in the __sdhci_uhs2_finish_command() > > > to match changes in the Patch#7. > > > * Patch#21: Adjust gl9755_vendor_init() to the correct function. > > > * Patch#22: Add gl9767 to support uhs2 function. > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20240123062827.8525-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v14 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#7: for core > > > patch#8-#20: for sdhci > > > patch#21: for GL9755 > > > > > > Changes in v14 (January. 23, 2024) > > > * rebased to the linux-kernel-v6.7.0-rc4 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V13 00/21] Add support UHS-II for GL9755. > > > * Patch#03: Move mmc_card_uhs2() to include/linux/mmc/host.h, so that > > > mmc_card_uhs2() can be available for host drivers. > > > * Patch#10: Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the > > > sdhci_uhs2_dump_regs(). > > > * Patch#11: Since mmc_card_uhs2() is the same as sdhci_uhs2_mode(), so > > > drop sdhci_uhs2_mode() and use mmc_card_uhs2() instead of > > > sdhci_uhs2_mode(). > > > * Patch#13: Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the > > > sdhci_uhs2_set_timeout(). > > > * Patch#14: Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the > > > sdhci_uhs2_set_ios(). > > > * Patch#16: Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the > > > sdhci_uhs2_request(). > > > * Patch#17: Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the > > > sdhci_uhs2_complete_work(), sdhci_uhs2_irq() and > > > sdhci_uhs2_thread_irq(). > > > * Patch#18: Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the > > > __sdhci_uhs2_remove_host(). > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230915094351.11120-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v13 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#7: for core > > > patch#8-#20: for sdhci > > > patch#21: for GL9755 > > > > > > Changes in v13 (November. 17, 2023) > > > * rebased to the linux-kernel-v6.7.0-rc1 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V12 00/23] Add support UHS-II for GL9755. > > > * according to the comments provided by Ulf Hansson to modify the > > > patches base on the [V12 00/23] Add support UHS-II for GL9755. > > > * Add new patch#6 to re-factoring the code. > > > * Patch#7: Separate __mmc_go_idle() into one patch for re-factorring the code. > > > Move mmc_decode_scr declaration to sd.h. > > > Ues uhs2_sd_tran to stead MMC_UHS2_SD_TRAN. > > > Drop unnecessary comment. > > > * Patch#11: Use ios timing to stead MMC_UHS2_SUPPORT for indicate the UHS2 mode. > > > * Patch#12: Drop use vmmc2. > > > Modify comment message. > > > * Patch#13: Modify comment message. > > > * Patch#14: Add judgment condition for power mode in the __sdhci_uhs2_set_ios(). > > > Modify comment message. > > > * Patch#15: Merge Patch#15, Patch#16 and Patch#17 of v12 version into Patch#15 in v13 version. > > > Use definitions to simplify code. > > > Modify comment message. > > > * Patch#16: Re-order function to avoid declaration. > > > Remove unnecessary function. > > > * Patch#17: Re-order function to avoid declaration. > > > Remove unnecessary definitions. > > > * Patch#18: Re-order function to avoid declaration. > > > Use vqmmc2 to stead vmmc2. > > > * Patch#21: Ues uhs2_sd_tran to stead MMC_UHS2_SD_TRAN. > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230915094351.11120-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v12 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#22: for sdhci > > > patch#23: for GL9755 > > > > > > Changes in v12 (September. 15, 2023) > > > * rebased to the linux-kernel-v6.6.0-rc1 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V11 00/23] Add support UHS-II for GL9755. > > > * according to the comments provided by Ulf Hansson to modify the > > > patches base on the [V11 00/23] Add support UHS-II for GL9755. > > > * Patch#5: Remove unused max_current_180_vdd2. > > > * Patch#6: Use mmc_op_multi() to check DCMD which supports multi > > > read/write in mmc_uhs2_prepare_cmd(). > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230908095330.12075-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v11 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#22: for sdhci > > > patch#23: for GL9755 > > > > > > Changes in v11 (September. 08, 2023) > > > * rebased to the linux-kernel-v6.5.0-rc5 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V10 00/23] Add support UHS-II for GL9755. > > > * Patch#18: Drop the check mmc_card_uhs2_hd_mode(host->mmc) > > > in sdhci_uhs2_set_transfer_mode(). > > > * Patch#20: Remove unused ocr_avail_uhs2. > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230721101349.12387-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v10 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#22: for sdhci > > > patch#23: for GL9755 > > > > > > Changes in v10 (August. 18, 2023) > > > * rebased to the linux-kernel-v6.5.0-rc5 in Ulf Hansson next branch. > > > * according to the comments provided by Ulf Hansson to modify the > > > patches base on the [V9 00/23] Add support UHS-II for GL9755. > > > * Patch#2: Drop unnecessary definitions and code. > > > * Patch#3: Modify the commit message. > > > * Patch#4: Modify the commit message. > > > * Patch#5: Drop unnecessary definitions. > > > * Patch#6: Move some definitions of PatchV9[02/23] to PatchV10[06/23]. > > > Move some definitions of PatchV9[05/23] to PatchV10[06/23]. > > > Drop do_multi in the mmc_blk_rw_rq_prep(). > > > Use tmode_half_duplex to instead of uhs2_tmode0_flag. > > > Move entire control of the tmode into mmc_uhs2_prepare_cmd(). > > > * Patch#11: Move some definitions of PatchV9[05/23] to PatchV10[11/23]. > > > * Patch#18: Use tmode_half_duplex to instead of uhs2_tmode0_flag > > > in sdhci_uhs2_set_transfer_mode(). > > > * Patch#20: Move some definitions of PatchV9[05/23] to PatchV10[20/23]. > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230721101349.12387-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v9 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#22: for sdhci > > > patch#23: for GL9755 > > > > > > Changes in v9 (July. 21, 2023) > > > * rebased to the linux-kernel-v6.5.0-rc1 in Ulf Hansson next branch. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V8 00/23] Add support UHS-II for GL9755. > > > * Patch#2: move sd_uhs2_operation definition of PatchV8[05/23] > > > to PatchV9[02/23] for avoid compilation errors. > > > move uhs2_control definition of PatchV8[05/23] > > > to PatchV9[02/23] for avoid compilation errors. > > > move mmc_host flags definition of PatchV8[05/23] > > > to PatchV9[02/23] for avoid compilation errors. > > > move mmc_host flags MMC_UHS2_SUPPORT definition of > > > PatchV8[05/23] to PatchV9[02/23] for avoid compilation errors. > > > move mmc_host flags MMC_UHS2_SD_TRAN definition of > > > PatchV8[05/23] to PatchV9[02/23] for avoid compilation errors. > > > * Patch#7: Modify the commit message. > > > * Patch#8: Modify the commit message. > > > * Patch#11: Modify annotations in sdhci_get_vdd_value(). > > > * Patch#14: Simplity the turning_on_clk in sdhci_set_ios(). > > > * Patch#18: Modify the annotations in __sdhci_uhs2_send_command(). > > > * Patch#19: Cancel export state of sdhci_set_mrq_done() function. > > > * Patch#23: Rename gl9755_pre_detect_init() to sdhci_gli_pre_detect_init(). > > > Rename gl9755_uhs2_reset_sd_tran() to > > > sdhci_gli_uhs2_reset_sd_tran(). > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230621100151.6329-1-victorshihgli@gmail.com/ > > > > > > ----------------- original cover letter from v8 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup > > > Sequence[2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence > > > [2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include > > > Section 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II > > > Setting Register Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy > > > SD compatibility and preserve Legacy SD infrastructures (Section 7.1.1 > > > Packet Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#22: for sdhci > > > patch#23: for GL9755 > > > > > > Changes in v8 (June. 21, 2023) > > > * rebased to the linux-kernel-v6.4.0-rc6 in Ulf Hansson next branch. > > > * fix most of checkpatch warnings/errors. > > > * according to the comments provided by Adrian Hunter to modify the > > > patches base on the [V7 00/23] Add support UHS-II for GL9755. > > > * Patch#6: Add MMC_UHS2_SUPPORT to be cleared in sd_uhs2_detect(). > > > Modify return value in sd_uhs2_attach(). > > > * Patch#7: Use tabs instead of spaces. > > > * Patch#8: Modify MODULE_LICENSE from "GPL v2" to "GPL". > > > * Patch#10: Adjust the position of matching brackets. > > > * Patch#11: Adjust the position of matching brackets. > > > Add the initial value of the pwr in sdhci_uhs2_set_power(). > > > * Patch#13: Initialization be combined with declaration and realigned > > > in sdhci_calc_timeout_uhs2(). > > > Forward declare struct mmc_command in sdhci_uhs2.h. > > > * Patch#14: Add the judgment formula for MMC_TIMING_SPEED_A_HD, > > > MMC_TIMING_SPEED_B and MMC_TIMING_SPEED_B_HD in > > > __sdhci_uhs2_set_ios(). > > > Add the switch case for MMC_TIMING_SPEED_A_HD, > > > MMC_TIMING_SPEED_B and MMC_TIMING_SPEED_B_HD in > > > sdhci_get_preset_value(). > > > mmc_opt_regulator_set_ocr() to instead of > > > mmc_regulator_set_ocr() in sdhci_uhs2_set_ios(). > > > * Patch#15: usleep_range() to instead of udelay() in > > > sdhci_uhs2_interface_detect(). > > > read_poll_timeout() to instead of read_poll_timeout_atomic() > > > in sdhci_uhs2_interface_detect(). > > > Modify return value in sdhci_uhs2_do_detect_init(). > > > * Patch#16: Remove unnecessary include file. > > > read_poll_timeout() to instead of read_poll_timeout_atomic() > > > in sdhci_uhs2_enable_clk(). > > > Put the comment on the end and put the lines in descending > > > line length in sdhci_uhs2_enable_clk(). > > > Modify return value in sdhci_uhs2_enable_clk(). > > > * Patch#17: Reorder the definitions and lose the parentheses in > > > sdhci_uhs2_set_config(). > > > read_poll_timeout() to instead of read_poll_timeout_atomic() > > > in sdhci_uhs2_check_dormant(). > > > * Patch#18: Adjust the position of matching brackets in > > > sdhci_uhs2_send_command_retry(). > > > Modify CameCase definition in __sdhci_uhs2_finish_command(). > > > Modify error message in __sdhci_uhs2_finish_command(). > > > sdhci_uhs2_send_command_retry() to instead of > > > sdhci_uhs2_send_command() in sdhci_uhs2_request(). > > > Use sdhci_uhs2_mode() to simplify code in > > > sdhci_uhs2_request_atomic(). > > > Add forward declaration for sdhci_send_command(). > > > * Patch#19: Forward declare struct mmc_request in sdhci_uhs2.h. > > > Remove forward declaration of sdhci_send_command(). > > > Use mmc_dev() to simplify code in sdhci_request_done_dma(). > > > * Patch#20: Change return type to void for __sdhci_uhs2_add_host_v4(). > > > Remove unused variables in __sdhci_uhs2_add_host_v4(). > > > * Patch#22: Add config select MMC_SDHCI_UHS2 in Kconfig. > > > * Patch#23: Use sdhci_get_vdd_value() to simplify code in > > > gl9755_set_power(). > > > Use read_poll_timeout_atomic() to simplify code in > > > sdhci_wait_clock_stable(). > > > Use read_poll_timeout_atomic() to simplify code in > > > sdhci_gl9755_reset(). > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/VictorShih/linux-uhs2.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20230331105546.13607-1-victor.shih@genesyslogic.com.tw/ > > > > > > ----------------- original cover letter from v7 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup Sequence > > > [2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence[2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include Section > > > 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II Setting Register > > > Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy SD > > > compatibility and preserve Legacy SD infrastructures (Section 7.1.1 Packet > > > Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#22: for sdhci > > > patch#23: for GL9755 > > > > > > Changes in v7 (Mar. 31, 2023) > > > * rebased to the linux-kernel-v6.3.0-rc3 in Ulf Hansson next branch. > > > * according to the guidance and overall architecture provided > > > by Ulf Hansson, Ben Chuang and Jason Lai to implement the > > > UHS-2 Core function based on the patches of the [V4,0/6] > > > Preparations to support SD UHS-II cards[5]. > > > * according to the guidance and comments provided by > > > Adrian Hunter, Ben Chuang and AKASHI Takahiro to implement > > > the UHS-2 Host function based on the patches of the > > > [RFC,v3.1,00/27] Add support UHS-II for GL9755[4]. > > > * implement the necessary function to let the UHS-2 Core/Host > > > work properly. > > > * fix most of checkpatch warnings/errors. > > > * according to the guidance and comments provided by > > > Adrian Hunter, Ben Chuang to implement the UHS-2 > > > Host function based on the patches of the > > > [V5,00/26] Add support UHS-II for GL9755[6]. > > > * according to the guidance and comments provided by > > > Ulf Hanssion, Adrian Hunter, Ben Chuang to implement the UHS-2 > > > Host function based on the patches of the > > > [V6,00/24] Add support UHS-II for GL9755[7]. > > > * The uhs2_post_attach_sd() function is no longer needed so drop > > > the V6 version of the Patch#22. > > > * Modifies the usage of the flags used by the sdhci host for > > > MMC_UHS2_INITIALIZED. > > > * Patch#1: Drop unnecessary bracket. > > > * Patch#2: Drop sd_uhs2_set_ios function. > > > Used ->uhs2_control() callback for uhs2_set_ios > > > in sd_uhs2_power_up(). > > > Used ->uhs2_control() callback for uhs2_set_ios > > > in sd_uhs2_power_off(). > > > Drop MMC_TIMING_SD_UHS2 in favor of MMC_TIMING_UHS2_SPEED_A. > > > Modify sd_uhs2_legacy_init to avoid the > > > sd_uhs2_reinit cycle issue. > > > * Patch#5: Drop unnecessary definitions. > > > * Patch#6: Drop unnecessary function. > > > Drop uhs2_state in favor of ios->timing. > > > * Patch#7: Reorder values and positions of definitions. > > > * Patch#9: Used sdhci_uhs2_mode function to simplify. > > > * Patch#11: Drop pwr variable in sdhci_uhs2_set_power function. > > > * Patch#14: Modify some descriptions. > > > Drop unnecessary function. > > > * Patch#15: Drop using uhs2_reset ops and use sdhci_uhs2_reset function > > > in the sdhci_do_detect_init function. > > > * Patch#17: Drop unnecessary function. > > > * Patch#18: Drop unnecessary whitespace changes. > > > Cancel the export state of some functions. > > > * Patch#19: Drop unnecessary function. > > > Used sdhci_uhs2_mode function to simplify. > > > Modify some descriptions. > > > Cancel the export state of some functions. > > > * Patch#20: Drop using __sdhci_uhs2_host function and use > > > __sdhci_add_host function in sdhci_uhs2_add_host function. > > > Cancel the export state of some functions. > > > * Patch#23: Drop using uhs2_post_attach_sd function. > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/ben.chuang/linux-uhs2-gl9755.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20201106022726.19831-1-takahiro.akashi@linaro.org/ > > > [5] https://patchwork.kernel.org/project/linux-mmc/cover/20220418115833.10738-1-jasonlai.genesyslogic@gmail.com/ > > > [6] https://patchwork.kernel.org/project/linux-mmc/cover/20221019110647.11076-1-victor.shih@genesyslogic.com.tw/ > > > [7] https://patchwork.kernel.org/project/linux-mmc/cover/20221213090047.3805-1-victor.shih@genesyslogic.com.tw/ > > > > > > ----------------- original cover letter from v6 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup Sequence > > > [2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence[2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include Section > > > 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II Setting Register > > > Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy SD > > > compatibility and preserve Legacy SD infrastructures (Section 7.1.1 Packet > > > Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#23: for sdhci > > > patch#24: for GL9755 > > > > > > Changes in v6 (Dec. 12, 2022) > > > * rebased to the linux-kernel-v6.1.0-rc8 in Ulf Hansson next branch. > > > * according to the guidance and overall architecture provided > > > by Ulf Hansson, Ben Chuang and Jason Lai to implement the > > > UHS-2 Core function based on the patches of the [V4,0/6] > > > Preparations to support SD UHS-II cards[5]. > > > * according to the guidance and comments provided by > > > Adrian Hunter, Ben Chuang and AKASHI Takahiro to implement > > > the UHS-2 Host function based on the patches of the > > > [RFC,v3.1,00/27] Add support UHS-II for GL9755[4]. > > > * implement the necessary function to let the UHS-2 Core/Host > > > work properly. > > > * fix most of checkpatch warnings/errors. > > > * according to the guidance and comments provided by > > > Adrian Hunter, Ben Chuang to implement the UHS-2 > > > Host function based on the patches of the > > > [V5,00/26] Add support UHS-II for GL9755[6]. > > > * The uhs2_post_attach_sd() has implemented in Patch#6 and > > > Patch#17 so drop the V5 version of the Patch#23. > > > * Modifies the usage of the flags used by the sdhci host for > > > MMC_UHS2_INITIALIZED. > > > * Patch#5: Drop unused definitions and functions. > > > * Patch#7: Rename definitions. > > > Use BIT() GENMASK() in some cases. > > > * Patch#8: Merge V5 version of Patch[7] and Patch[9] into > > > V6 version of Patch[8]. > > > * Patch#9: Drop unnecessary function. > > > Rename used definitions. > > > * Patch#10: Drop unnecessary function and simplify some code. > > > * Patch#11: Drop unnecessary function. > > > Add new mmc_opt_regulator_set_ocr function. > > > * Patch#13: Drop unnecessary function. > > > Use GENMASK() and FIELD_PREP() in some cases. > > > * Patch#14: Drop unnecessary function. > > > Modify return value in some function. > > > Use GENMASK() and FIELD_PREP() in some cases. > > > * Patch#15: Drop unnecessary function. > > > Rename used definitions. > > > Use GENMASK() and FIELD_GET() in some cases. > > > Wrap at 100 columns in some functions. > > > * Patch#16: Drop unnecessary function. > > > * Patch#17: Drop unnecessary function. > > > Drop the unnecessary parameter when call the DBG() > > > function. > > > Rename used definitions. > > > Cancel the export state of some functions. > > > Use GENMASK() and FIELD_PREP() in some cases. > > > * Patch#18: Drop unnecessary function. > > > Add uhs2_dev_cmd function to simplify some functions. > > > Rename used definitions. > > > Cancel the export state of some functions. > > > Use GENMASK() and FIELD_PREP() in some cases. > > > * Patch#19: Drop unnecessary function. > > > Add sdhci_uhs2_mode() in some functions. > > > Rename used definitions. > > > Cancel the export state of some functions. > > > * Patch#20: Add new complete_work_fn/thread_irq_fn variables in > > > struct sdhci_host. > > > Use complete_work_fn/thread_irq_fn variables in > > > sdhci_alloc_host()/sdhci_uhs2_add_host(). > > > Rename used definitions. > > > * Patch[24]: Rename used definitions. > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/ben.chuang/linux-uhs2-gl9755.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20201106022726.19831-1-takahiro.akashi@linaro.org/ > > > [5] https://patchwork.kernel.org/project/linux-mmc/cover/20220418115833.10738-1-jasonlai.genesyslogic@gmail.com/ > > > [6] https://patchwork.kernel.org/project/linux-mmc/cover/20221019110647.11076-1-victor.shih@genesyslogic.com.tw/ > > > > > > ----------------- original cover letter from v5 ----------------- > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup Sequence > > > [2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence[2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include Section > > > 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II Setting Register > > > Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy SD > > > compatibility and preserve Legacy SD infrastructures (Section 7.1.1 Packet > > > Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#6: for core > > > patch#7-#25: for sdhci > > > patch#26: for GL9755 > > > > > > Changes in v5 (Oct. 19, 2022) > > > * rebased to the linux-kernel-v6.1-rc1 in Ulf Hansson next branch. > > > * according to the guidance and overall architecture provided > > > by Ulf Hansson, Ben Chuang and Jason Lai to implement the > > > UHS-2 Core function based on the patches of the [V4,0/6] > > > Preparations to support SD UHS-II cards[5]. > > > * according to the guidance and comments provided by > > > Adrian Hunter, Ben Chuang and AKASHI Takahiro to implement > > > the UHS-2 Host function based on the patches of the > > > [RFC,v3.1,00/27] Add support UHS-II for GL9755[4]. > > > * implement the necessary function to let the UHS-2 Core/Host > > > work properly. > > > * fix most of checkpatch warnings/errors > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/ben.chuang/linux-uhs2-gl9755.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > [4] https://patchwork.kernel.org/project/linux-mmc/cover/20201106022726.19831-1-takahiro.akashi@linaro.org/ > > > [5] https://patchwork.kernel.org/project/linux-mmc/cover/20220418115833.10738-1-jasonlai.genesyslogic@gmail.com/ > > > > > > ----------------- original cover letter from v3.1 ----------------- > > > This is an interim snapshot of our next version, v4, for enabling > > > UHS-II on MMC/SD. > > > > > > It is focused on 'sdhci' side to address Adrian's comments regarding > > > "modularising" sdhci-uhs2.c. > > > The whole aim of this version is to get early feedback from Adrian (and > > > others) on this issue. Without any consensus about the code structure, > > > it would make little sense to go further ahead on sdhci side. > > > (Actually, Adrian has made no comments other than "modularising" so far.) > > > > > > I heavily reworked/refactored sdhci-uhs2.c and re-organised the patch > > > set to meet what I believe Adrian expects; no UHS-II related code in > > > Legacy (UHS-I) code or sdhci.c. > > > > > > Nevertheless, almost of all changes I made are trivial and straightforward > > > in this direction, and I believe that there is no logic changed since v3 > > > except sdhci_uhs2_irq(), as ops->irq hook, where we must deal with UHS-II > > > command sequences in addition to UHS-II errors. So I added extra handlings. > > > > > > I admit that there is plenty of room for improvements (for example, > > > handling host->flags), but again the focal point here is how sdhci-uhs2.c > > > should be built as a module. > > > > > > Please review this series (particularly Patch#8-#26 and #27) from this > > > viewpoint in the first place. > > > (Ben is working on 'host' side but there is no change on 'host' side > > > in this submission except a minor tweak.) > > > > > > Thanks, > > > -Takahiro Akashi > > > > > > ------ original cover letter from v3 ------ > > > Summary > > > ======= > > > These patches[1] support UHS-II and fix GL9755 UHS-II compatibility. > > > > > > About UHS-II, roughly deal with the following three parts: > > > 1) A UHS-II detection and initialization: > > > - Host setup to support UHS-II (Section 3.13.1 Host Controller Setup Sequence > > > [2]). > > > - Detect a UHS-II I/F (Section 3.13.2 Card Interface Detection Sequence[2]). > > > - In step(9) of Section 3.13.2 in [2], UHS-II initialization is include Section > > > 3.13.3 UHS-II Card Initialization and Section 3.13.4 UHS-II Setting Register > > > Setup Sequence. > > > > > > 2) Send Legacy SD command through SD-TRAN > > > - Encapsulated SD packets are defined in SD-TRAN in order to ensure Legacy SD > > > compatibility and preserve Legacy SD infrastructures (Section 7.1.1 Packet > > > Types and Format Overview[3]). > > > - Host issue a UHS-II CCMD packet or a UHS-II DCMD (Section 3.13.5 UHS-II > > > CCMD Packet issuing and Section 3.13.6 UHS-II DCMD Packet issuing[2]). > > > > > > 3) UHS-II Interrupt > > > - Except for UHS-II error interrupts, most interrupts share the original > > > interrupt registers. > > > > > > Patch structure > > > =============== > > > patch#1-#7: for core > > > patch#8-#17: for sdhci > > > patch#18-#21: for GL9755 > > > > > > Tests > > > ===== > > > Ran 'dd' command to evaluate the performance: > > > (SanDisk UHS-II card on GL9755 controller) > > > Read Write > > > UHS-II disabled (UHS-I): 88.3MB/s 60.7MB/s > > > UHS-II enabled : 206MB/s 80MB/s > > > > > > TODO > > > ==== > > > - replace some define with BIT macro > > > > > > Reference > > > ========= > > > [1] https://gitlab.com/ben.chuang/linux-uhs2-gl9755.git > > > [2] SD Host Controller Simplified Specification 4.20 > > > [3] UHS-II Simplified Addendum 1.02 > > > > > > Changes in v3 (Jul. 10, 2020) > > > * rebased to v5.8-rc4 > > > * add copyright notice > > > * reorganize the patch set and split some commits into smaller ones > > > * separate uhs-2 headers from others > > > * correct wrong spellings > > > * fix most of checkpatch warnings/errors > > > * remove all k[cz]alloc() from the code > > > * guard sdhci-uhs2 specific code with > > > 'if (IS_ENABLED(CONFIG_MMC_SDHCI_UHS2))' > > > * make sdhci-uhs2.c as a module > > > * trivial changes, including > > > - rename back sdhci-core.c to sdhci.c > > > - allow vendor code to disable uhs2 if v4_mode == 0 > > > in __sdhci_add_host() > > > - merge uhs2_power_up() into mmc_power_up() > > > - remove flag_uhs2 from mmc_attach_sd() > > > - add function descriptions to EXPORT'ed functions > > > - other minor code optimization > > > > > > Changes in v2 (Jan. 9, 2020) > > > * rebased to v5.5-rc5 > > > > > > Ben Chuang (1): > > > mmc: sdhci-uhs2: add pre-detect_init hook > > > > > > Ulf Hansson (4): > > > mmc: core: Cleanup printing of speed mode at card insertion > > > mmc: core: Prepare to support SD UHS-II cards > > > mmc: core: Announce successful insertion of an SD UHS-II card > > > mmc: core: Extend support for mmc regulators with a vqmmc2 > > > > > > Victor Shih (17): > > > mmc: core: Add definitions for SD UHS-II cards > > > mmc: core: Add New function to re-factoring the code > > > mmc: core: Support UHS-II card control and access > > > mmc: sdhci: add UHS-II related definitions in headers > > > mmc: sdhci: add UHS-II module and add a kernel configuration > > > mmc: sdhci-uhs2: dump UHS-II registers > > > mmc: sdhci-uhs2: add reset function function > > > mmc: sdhci-uhs2: add set_power() to support vdd2 > > > mmc: sdhci-uhs2: add set_timeout() > > > mmc: sdhci-uhs2: add set_ios() > > > mmc: sdhci-uhs2: add uhs2_control() to initialise the interface > > > mmc: sdhci-uhs2: add request() and others > > > mmc: sdhci-uhs2: add irq() and others > > > mmc: sdhci-uhs2: add add_host() and others to set up the driver > > > mmc: sdhci-pci: add UHS-II support framework > > > mmc: sdhci-pci-gli: enable UHS-II mode for GL9755 > > > mmc: sdhci-pci-gli: enable UHS-II mode for GL9767 > > > > > > drivers/mmc/core/Makefile | 2 +- > > > drivers/mmc/core/bus.c | 38 +- > > > drivers/mmc/core/core.c | 23 +- > > > drivers/mmc/core/core.h | 1 + > > > drivers/mmc/core/mmc_ops.c | 24 +- > > > drivers/mmc/core/mmc_ops.h | 1 + > > > drivers/mmc/core/regulator.c | 34 + > > > drivers/mmc/core/sd.c | 10 +- > > > drivers/mmc/core/sd.h | 5 + > > > drivers/mmc/core/sd_ops.c | 9 + > > > drivers/mmc/core/sd_ops.h | 13 + > > > drivers/mmc/core/sd_uhs2.c | 1326 +++++++++++++++++++++++++++++ > > > drivers/mmc/host/Kconfig | 10 + > > > drivers/mmc/host/Makefile | 1 + > > > drivers/mmc/host/sdhci-pci-core.c | 16 +- > > > drivers/mmc/host/sdhci-pci-gli.c | 382 ++++++++- > > > drivers/mmc/host/sdhci-pci.h | 3 + > > > drivers/mmc/host/sdhci-uhs2.c | 1272 +++++++++++++++++++++++++++ > > > drivers/mmc/host/sdhci-uhs2.h | 190 +++++ > > > drivers/mmc/host/sdhci.c | 281 +++--- > > > drivers/mmc/host/sdhci.h | 75 +- > > > include/linux/mmc/card.h | 36 + > > > include/linux/mmc/core.h | 17 + > > > include/linux/mmc/host.h | 80 ++ > > > include/linux/mmc/sd_uhs2.h | 240 ++++++ > > > 25 files changed, 3939 insertions(+), 150 deletions(-) > > > create mode 100644 drivers/mmc/core/sd_uhs2.c > > > create mode 100644 drivers/mmc/host/sdhci-uhs2.c > > > create mode 100644 drivers/mmc/host/sdhci-uhs2.h > > > create mode 100644 include/linux/mmc/sd_uhs2.h > > > > >
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