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Date: Tue, 11 Apr 2017 09:59:59 +0200
From: Gregory CLEMENT <gregory.clement@...e-electrons.com>
To: Ulf Hansson <ulf.hansson@...aro.org>
Cc: Adrian Hunter <adrian.hunter@...el.com>,
"linux-mmc\@vger.kernel.org" <linux-mmc@...r.kernel.org>,
Jason Cooper <jason@...edaemon.net>,
Andrew Lunn <andrew@...n.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
"linux-arm-kernel\@lists.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Mike Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>,
linux-clk <linux-clk@...r.kernel.org>,
"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
Rob Herring <robh+dt@...nel.org>,
"devicetree\@vger.kernel.org" <devicetree@...r.kernel.org>,
Ziji Hu <huziji@...vell.com>, Jimmy Xu <zmxu@...vell.com>,
Jisheng Zhang <jszhang@...vell.com>,
Nadav Haklai <nadavh@...vell.com>, Ryan Gao <ygao@...vell.com>,
Doug Jones <dougj@...vell.com>, Victor Gu <xigu@...vell.com>,
"Wei\(SOCP\) Liu" <liuw@...vell.com>,
Wilson Ding <dingwei@...vell.com>,
Yehuda Yitschak <yehuday@...vell.com>,
Ma rcin Wojtas <mw@...ihalf.com>,
Hanna Hawa <hannah@...vell.com>,
Kostya Porotchkin <kostap@...vell.com>
Subject: Re: [PATCH v7 00/13] mmc: Add support to Marvell Xenon SD Host Controller
Hi Ulf,
On lun., avril 10 2017, Ulf Hansson <ulf.hansson@...aro.org> wrote:
> On 30 March 2017 at 17:22, Gregory CLEMENT
> <gregory.clement@...e-electrons.com> wrote:
>> Hello,
>>
>> This the seventh version of the series adding support for the SDHCI
>> Xenon controller. It can be currently found on the Armada 37xx and the
>> Armada 7K/8K but will be also used in more Marvell SoC (and not only
>> the mvebu ones actually).
>>
>> v6->v7:
>> - Add comments on vqmmc and vmmc in examples in dt binding doc.
>>
>> - Fix all the issues pointed out by Ulf and Adrian:
>>
>> - Align the prefix of function and variable names.
>> - Replace the if-else with switch statements when checking MMC_TIMING_*
>> - Remove the spinlocks in set_ios.
>> - Optimize the delay loop as Adrian patch does.
>> - Add release of phy params structures
>>
>> - Add check of Vqmmc supply in Xenon signal voltage switch. If Vqmmc
>> regulator doesn't exist, skip standard SD signal voltage regulator
>> switch process.
>>
>> - Remove parse of child node mmc-card. Wait for a better solution.
>>
>> v5->v6:
>>
>> - Add a generic "mmc-card" parse in core layer.
>>
>> - Fix the spelling issues in Xenon dt binding doc and drivers.
>>
>> - Remove descriptions to common mmc properties from Xenon dt binding
>> doc.
>>
>> - Split compatible string "marvell,armada-8k-sdhci" into
>> "marvell,armada-ap806-sdhci" and "marvell,armada-cp110-sdhci".
>>
>> - Also updates the example in Xenon dt binding doc.
>>
>> - Remove unnecessary dependency on MMC_SDHCI from Xenon entry in
>> Kconfig.
>>
>> - Move Xenon specific dt parse into a separate function.
>>
>> - Adjust warnings and condition check in Xenon PHY setting, to remove
>> fragile hs200->hs400/hs400->hs200 sequence check function.
>>
>> - Enable PHY Slow Mode in MMC_TIMING_LEGACY timing if PHY Slow Mode is
>> required in dts.
>>
>> - Add a patch allowing dts backwards compatible for the clock
>>
>> v4->v5:
>>
>> - Remove the patch to export sdhci_execute_tuning(). It is already
>> exported in v4.10.
>>
>> - Introduce a patch adding a missing clock for the sdhci controller
>> present on the CP master for A7K/A8K. There is no build dependency
>> but obviously this patch is need to use the sdhci controller present
>> on the CP part.
>>
>> - Adjust Xenon return setup, to avoid being overwritten by
>> sdhci_add_host().
>>
>> - Change Xenon register definition prefix to "XENON_".
>>
>> - Fix typos in Xenon driver and dt-binding docs.
>>
>> - Change compatible string "marvell,armada-7000-sdhci" to
>> "marvell,armada-8k-sdhci". Actually the Armada 7K SoCs are a subset
>> of the Armada 8K SoCs. Moreover, the use of the '000' is not
>> consistent with all the other compatible string already used for the
>> Armada 7K/8K family.
>>
>> - Added the Tested-by from Russell King on an Armada 8K based board.
>>
>> v3 -> v4:
>> For this version a few change have been done:
>> - fixes 2 bug reported by kbuild-bot
>> - remove extra of_node_put()
>> - convert 0 in false for function returning boolean
>>
>> - add a device tree node for the sdhci controller present on the CP
>> master for A7K/A8K. It also led to rename the sdhci0 node on AP to
>> ap_sdhci0 to make a distinction with the one present on CP master.
>>
>> v2 -> v3
>> I think that now most (if not all) the remarks had been taking into
>> account since the second version. According to Ziji Hu, here are the
>> following changes:
>> " Changes in V3:
>> Adjust and improve Xenon DT bindings. Move some caps setting from driver into
>> DT. Use mmc-card sub-node to represent eMMC type.
>> Remove PHY Sampling Fixed Delay Line scan in lower speed mode.
>> Improve Xenon probe and ->init_card() functions.
>> Export sdhci_enable_sdio_irq() and implement own SDIO IRQ control.
>> Split PHY patch into two smaller patches.
>> Temporarily remove AXI clock before its implementation is improved."
>>
>> Besides this changes I also
>> - Removed the sdhci-xenon-phy.h and moved its content in the
>> shc-xenon-phy.c file.
>> - Fixed the tuning-count usage
>> - Managed the error case for clk_prepare_enable
>>
>> For the record the change from v1 was:
>> " Changes in V2:
>> rebase on v4.9-rc2.
>> Re-write Xenon bindings. Ajust Xenon DT property naming.
>> Add a new DT property to indicate eMMC card type, instead of using
>> variable card_candidate.
>> Clear quirks SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 in Xenon platform data
>> Add support to HS400 retuning."
>>
>> Thanks,
>>
>> Gregory
>>
>> Gregory CLEMENT (4):
>> clk: apn806: Turn the eMMC clock as optional for dts backwards compatible
>> arm64: dts: marvell: add eMMC support for Armada 37xx
>> arm64: dts: marvell: add sdhci support for Armada 7K/8K
>> arm64: configs: enable SDHCI driver for Xenon
>>
>> Hu Ziji (8):
>> mmc: sdhci: Export sdhci_set_ios() from sdhci.c
>> mmc: sdhci: Export sdhci_start_signal_voltage_switch() in sdhci.c
>> mmc: sdhci: Export sdhci_enable_sdio_irq() from sdhci.c
>> dt: bindings: Add bindings for Marvell Xenon SD Host Controller
>> mmc: sdhci-xenon: Add Marvell Xenon SDHC core functionality
>> mmc: sdhci-xenon: Add support to PHYs of Marvell Xenon SDHC
>> mmc: sdhci-xenon: Add SoC PHY PAD voltage control
>> MAINTAINERS: add entry for Marvell Xenon MMC Host Controller drivers
>>
>> Konstantin Porotchkin (1):
>> clk: apn806: Add eMMC clock to system controller driver
>>
>> Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt | 170 +-
>> MAINTAINERS | 7 +-
>> arch/arm64/boot/dts/marvell/armada-3720-db.dts | 9 +-
>> arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 11 +-
>> arch/arm64/boot/dts/marvell/armada-7040-db.dts | 14 +-
>> arch/arm64/boot/dts/marvell/armada-8040-db.dts | 12 +-
>> arch/arm64/boot/dts/marvell/armada-ap806.dtsi | 14 +-
>> arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi | 11 +-
>> arch/arm64/configs/defconfig | 1 +-
>> drivers/clk/mvebu/ap806-system-controller.c | 21 +-
>> drivers/mmc/host/Kconfig | 8 +-
>> drivers/mmc/host/Makefile | 3 +-
>> drivers/mmc/host/sdhci-xenon-phy.c | 835 +++++++-
>> drivers/mmc/host/sdhci-xenon.c | 548 +++++-
>> drivers/mmc/host/sdhci-xenon.h | 101 +-
>> drivers/mmc/host/sdhci.c | 11 +-
>> drivers/mmc/host/sdhci.h | 4 +-
>> 17 files changed, 1774 insertions(+), 6 deletions(-)
>> create mode 100644 Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt
>> create mode 100644 drivers/mmc/host/sdhci-xenon-phy.c
>> create mode 100644 drivers/mmc/host/sdhci-xenon.c
>> create mode 100644 drivers/mmc/host/sdhci-xenon.h
>>
>> base-commit: a645cc1df4ff41ba54a2fb839962b8ff142121d9
>> --
>> git-series 0.9.1
>
>
> Thanks, applied patch 1->10 for next! 11->13 will have to go via the
> SoC maintainer tree.
Great, thanks!
Patch 11 and 12 are now applied on mvebu/dt64 and patch 13 on
mvebu/defconfig64.
Gregory
>
> Kind regards
> Uffe
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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