[PATCH 1/2] ufs: host: ufs-qcom: Clear qunipro_g4_sel for HW version major 5

Abel Vesa
2022-11-16T12:21:18Z

On SM8550, depending on the Qunipro, we can run with G5 or G4.
For now, when the major version is 5 or above, we go with G5.
Therefore, we need to specifically tell UFS HC that.

Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
---
drivers/ufs/host/ufs-qcom.c | 4 ++++
drivers/ufs/host/ufs-qcom.h | 2 ++
2 files changed, 6 insertions(+)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index ca60a5b0292b..72334aefe81c 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -227,6 +227,10 @@ static void ufs_qcom_select_unipro_mode(struct ufs_qcom_host *host)
ufshcd_rmwl(host->hba, QUNIPRO_SEL,
ufs_qcom_cap_qunipro(host) ? QUNIPRO_SEL : 0,
REG_UFS_CFG1);
+
+ if (host->hw_ver.major == 0x05)
+ ufshcd_rmwl(host->hba, QUNIPRO_G4_SEL, 0, REG_UFS_CFG0);
+
/* make sure above configuration is applied before we return */
mb();
}
diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h
index 751ded3e3531..10621055bf7f 100644
--- a/drivers/ufs/host/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -36,6 +36,7 @@ enum {
/* On older UFS revisions, this register is called "RETRY_TIMER_REG" */
REG_UFS_PARAM0 = 0xD0,
REG_UFS_PA_LINK_STARTUP_TIMER = 0xD8,
+ REG_UFS_CFG0 = 0xD8,
REG_UFS_CFG1 = 0xDC,
REG_UFS_CFG2 = 0xE0,
REG_UFS_HW_VERSION = 0xE4,
@@ -75,6 +76,7 @@ enum {

/* bit definitions for REG_UFS_CFG1 register */
#define QUNIPRO_SEL BIT(0)
+#define QUNIPRO_G4_SEL BIT(5)
#define UFS_PHY_SOFT_RESET BIT(1)
#define UTP_DBG_RAMS_EN BIT(17)
#define TEST_BUS_EN BIT(18)
--
2.34.1