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Date: Fri, 10 Jun 2022 16:11:19 +0530
From: Alim Akhtar <alim.akhtar@...sung.com>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-scsi@...r.kernel.org, linux-phy@...ts.infradead.org
Cc: devicetree@...r.kernel.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, vkoul@...nel.org,
avri.altman@....com, bvanassche@....org,
martin.petersen@...cle.com, chanho61.park@...sung.com,
pankaj.dubey@...sung.com, Alim Akhtar <alim.akhtar@...sung.com>,
Bharat Uppal <bharat.uppal@...sung.com>
Subject: [PATCH v4 6/6] ufs: host: ufs-exynos: add support for fsd ufs hci
Adds support of UFS HCI which is found in Tesla Full Self-Driving (FSD)
SoC.
Signed-off-by: Bharat Uppal <bharat.uppal@...sung.com>
Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
---
drivers/ufs/host/ufs-exynos.c | 140 ++++++++++++++++++++++++++++++++++
drivers/ufs/host/ufs-exynos.h | 1 +
2 files changed, 141 insertions(+)
diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index cc128aff8871..69943069093a 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -146,6 +146,10 @@ enum {
#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER1 0x0A8
#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER2 0x0AC
+#define UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER0 0x78B8
+#define UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER1 0x78BC
+#define UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER2 0x78C0
+
/*
* UFS Protector registers
*/
@@ -1474,6 +1478,99 @@ static int exynosauto_ufs_vh_init(struct ufs_hba *hba)
return 0;
}
+static int fsd_ufs_pre_link(struct exynos_ufs *ufs)
+{
+ int i;
+ struct ufs_hba *hba = ufs->hba;
+
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_CLK_PERIOD),
+ DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
+ ufshcd_dme_set(hba, UIC_ARG_MIB(0x201), 0x12);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x40);
+
+ for_each_ufs_tx_lane(ufs, i) {
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xAA, i),
+ DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8F, i), 0x3F);
+ }
+
+ for_each_ufs_rx_lane(ufs, i) {
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x12, i),
+ DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x5C, i), 0x38);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x0F, i), 0x0);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x65, i), 0x1);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x69, i), 0x1);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x21, i), 0x0);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x22, i), 0x0);
+ }
+
+ ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x0);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_AUTOMODE_THLD), 0x4E20);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), 0x2e820183);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0x0);
+
+ exynos_ufs_establish_connt(ufs);
+
+ return 0;
+}
+
+static int fsd_ufs_post_link(struct exynos_ufs *ufs)
+{
+ int i;
+ struct ufs_hba *hba = ufs->hba;
+ u32 hw_cap_min_tactivate;
+ u32 peer_rx_min_actv_time_cap;
+ u32 max_rx_hibern8_time_cap;
+
+ ufshcd_dme_get(hba, UIC_ARG_MIB_SEL(0x8F, 4),
+ &hw_cap_min_tactivate); /* HW Capability of MIN_TACTIVATE */
+ ufshcd_dme_get(hba, UIC_ARG_MIB(PA_TACTIVATE),
+ &peer_rx_min_actv_time_cap); /* PA_TActivate */
+ ufshcd_dme_get(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
+ &max_rx_hibern8_time_cap); /* PA_Hibern8Time */
+
+ if (peer_rx_min_actv_time_cap >= hw_cap_min_tactivate)
+ ufshcd_dme_peer_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
+ peer_rx_min_actv_time_cap + 1);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), max_rx_hibern8_time_cap + 1);
+
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), 0x01);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_SAVECONFIGTIME), 0xFA);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), 0x00);
+
+ ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x40);
+
+ for_each_ufs_rx_lane(ufs, i) {
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x35, i), 0x05);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x73, i), 0x01);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x41, i), 0x02);
+ ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x42, i), 0xAC);
+ }
+
+ ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x0);
+
+ return 0;
+}
+
+static int fsd_ufs_pre_pwr_change(struct exynos_ufs *ufs,
+ struct ufs_pa_layer_attr *pwr)
+{
+ struct ufs_hba *hba = ufs->hba;
+
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), 0x1);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), 0x1);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0), 12000);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1), 32000);
+ ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2), 16000);
+
+ unipro_writel(ufs, 12000, UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER0);
+ unipro_writel(ufs, 32000, UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER1);
+ unipro_writel(ufs, 16000, UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER2);
+
+ return 0;
+}
+
static struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
.name = "exynos_ufs",
.init = exynos_ufs_init,
@@ -1596,6 +1693,47 @@ static struct exynos_ufs_drv_data exynos_ufs_drvs = {
.post_pwr_change = exynos7_ufs_post_pwr_change,
};
+static struct exynos_ufs_uic_attr fsd_uic_attr = {
+ .tx_trailingclks = 0x10,
+ .tx_dif_p_nsec = 3000000, /* unit: ns */
+ .tx_dif_n_nsec = 1000000, /* unit: ns */
+ .tx_high_z_cnt_nsec = 20000, /* unit: ns */
+ .tx_base_unit_nsec = 100000, /* unit: ns */
+ .tx_gran_unit_nsec = 4000, /* unit: ns */
+ .tx_sleep_cnt = 1000, /* unit: ns */
+ .tx_min_activatetime = 0xa,
+ .rx_filler_enable = 0x2,
+ .rx_dif_p_nsec = 1000000, /* unit: ns */
+ .rx_hibern8_wait_nsec = 4000000, /* unit: ns */
+ .rx_base_unit_nsec = 100000, /* unit: ns */
+ .rx_gran_unit_nsec = 4000, /* unit: ns */
+ .rx_sleep_cnt = 1280, /* unit: ns */
+ .rx_stall_cnt = 320, /* unit: ns */
+ .rx_hs_g1_sync_len_cap = SYNC_LEN_COARSE(0xf),
+ .rx_hs_g2_sync_len_cap = SYNC_LEN_COARSE(0xf),
+ .rx_hs_g3_sync_len_cap = SYNC_LEN_COARSE(0xf),
+ .rx_hs_g1_prep_sync_len_cap = PREP_LEN(0xf),
+ .rx_hs_g2_prep_sync_len_cap = PREP_LEN(0xf),
+ .rx_hs_g3_prep_sync_len_cap = PREP_LEN(0xf),
+ .pa_dbg_option_suite = 0x2E820183,
+};
+
+struct exynos_ufs_drv_data fsd_ufs_drvs = {
+ .uic_attr = &fsd_uic_attr,
+ .quirks = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
+ UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |
+ UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR |
+ UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING |
+ UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR,
+ .opts = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL |
+ EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
+ EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
+ EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
+ .pre_link = fsd_ufs_pre_link,
+ .post_link = fsd_ufs_post_link,
+ .pre_pwr_change = fsd_ufs_pre_pwr_change,
+};
+
static const struct of_device_id exynos_ufs_of_match[] = {
{ .compatible = "samsung,exynos7-ufs",
.data = &exynos_ufs_drvs },
@@ -1603,6 +1741,8 @@ static const struct of_device_id exynos_ufs_of_match[] = {
.data = &exynosauto_ufs_drvs },
{ .compatible = "samsung,exynosautov9-ufs-vh",
.data = &exynosauto_ufs_vh_drvs },
+ { .compatible = "tesla,fsd-ufs",
+ .data = &fsd_ufs_drvs },
{},
};
diff --git a/drivers/ufs/host/ufs-exynos.h b/drivers/ufs/host/ufs-exynos.h
index 0b0a3d530ca6..a4bd6646d7f1 100644
--- a/drivers/ufs/host/ufs-exynos.h
+++ b/drivers/ufs/host/ufs-exynos.h
@@ -22,6 +22,7 @@
#define PA_DBG_RXPHY_CFGUPDT 0x9519
#define PA_DBG_MODE 0x9529
#define PA_DBG_SKIP_RESET_PHY 0x9539
+#define PA_DBG_AUTOMODE_THLD 0x9536
#define PA_DBG_OV_TM 0x9540
#define PA_DBG_SKIP_LINE_RESET 0x9541
#define PA_DBG_LINE_RESET_REQ 0x9543
--
2.25.1
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