From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: martin.petersen@oracle.com, jejb@linux.ibm.com,
andersson@kernel.org, vkoul@kernel.org
Cc: quic_cang@quicinc.com, quic_asutoshd@quicinc.com,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-phy@lists.infradead.org, linux-scsi@vger.kernel.org,
dmitry.baryshkov@linaro.org, ahalaney@redhat.com,
abel.vesa@linaro.org,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH v3 19/20] scsi: ufs: ufs-qcom: Add support for finding max gear on new platforms
Date: Wed, 23 Nov 2022 13:18:25 +0530 [thread overview]
Message-ID: <20221123074826.95369-20-manivannan.sadhasivam@linaro.org> (raw)
In-Reply-To: <20221123074826.95369-1-manivannan.sadhasivam@linaro.org>
Starting from Qcom UFS version 4.0, vendor specific REG_UFS_PARAM0 register
can be used to determine the maximum gear supported by the controller.
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/ufs/host/ufs-qcom.c | 2 ++
drivers/ufs/host/ufs-qcom.h | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 3efef2f36e69..607fddb7b4c3 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -291,6 +291,8 @@ static u32 ufs_qcom_get_hs_gear(struct ufs_hba *hba)
* Hence downgrade the maximum supported gear to HS-G2.
*/
return UFS_HS_G2;
+ } else if (host->hw_ver.major >= 0x4) {
+ return UFS_QCOM_MAX_GEAR(ufshcd_readl(hba, REG_UFS_PARAM0));
}
/* Default is HS-G3 */
diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h
index 4b00c67e9d7f..dd3abd23ec22 100644
--- a/drivers/ufs/host/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -94,6 +94,10 @@ enum {
#define TMRLUT_HW_CGC_EN BIT(6)
#define OCSC_HW_CGC_EN BIT(7)
+/* bit definitions for REG_UFS_PARAM0 */
+#define MAX_HS_GEAR_MASK GENMASK(6, 4)
+#define UFS_QCOM_MAX_GEAR(x) FIELD_GET(MAX_HS_GEAR_MASK, (x))
+
/* bit definition for UFS_UFS_TEST_BUS_CTRL_n */
#define TEST_BUS_SUB_SEL_MASK GENMASK(4, 0) /* All XXX_SEL fields are 5 bits wide */
--
2.25.1
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
WARNING: multiple messages have this Message-ID (diff)
From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: martin.petersen@oracle.com, jejb@linux.ibm.com,
andersson@kernel.org, vkoul@kernel.org
Cc: quic_cang@quicinc.com, quic_asutoshd@quicinc.com,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-phy@lists.infradead.org, linux-scsi@vger.kernel.org,
dmitry.baryshkov@linaro.org, ahalaney@redhat.com,
abel.vesa@linaro.org,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH v3 19/20] scsi: ufs: ufs-qcom: Add support for finding max gear on new platforms
Date: Wed, 23 Nov 2022 13:18:25 +0530 [thread overview]
Message-ID: <20221123074826.95369-20-manivannan.sadhasivam@linaro.org> (raw)
In-Reply-To: <20221123074826.95369-1-manivannan.sadhasivam@linaro.org>
Starting from Qcom UFS version 4.0, vendor specific REG_UFS_PARAM0 register
can be used to determine the maximum gear supported by the controller.
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/ufs/host/ufs-qcom.c | 2 ++
drivers/ufs/host/ufs-qcom.h | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 3efef2f36e69..607fddb7b4c3 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -291,6 +291,8 @@ static u32 ufs_qcom_get_hs_gear(struct ufs_hba *hba)
* Hence downgrade the maximum supported gear to HS-G2.
*/
return UFS_HS_G2;
+ } else if (host->hw_ver.major >= 0x4) {
+ return UFS_QCOM_MAX_GEAR(ufshcd_readl(hba, REG_UFS_PARAM0));
}
/* Default is HS-G3 */
diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h
index 4b00c67e9d7f..dd3abd23ec22 100644
--- a/drivers/ufs/host/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -94,6 +94,10 @@ enum {
#define TMRLUT_HW_CGC_EN BIT(6)
#define OCSC_HW_CGC_EN BIT(7)
+/* bit definitions for REG_UFS_PARAM0 */
+#define MAX_HS_GEAR_MASK GENMASK(6, 4)
+#define UFS_QCOM_MAX_GEAR(x) FIELD_GET(MAX_HS_GEAR_MASK, (x))
+
/* bit definition for UFS_UFS_TEST_BUS_CTRL_n */
#define TEST_BUS_SUB_SEL_MASK GENMASK(4, 0) /* All XXX_SEL fields are 5 bits wide */
--
2.25.1
next prev parent reply other threads:[~2022-11-23 7:50 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-23 7:48 [PATCH v3 00/20] ufs: qcom: Add HS-G4 support Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 01/20] phy: qcom-qmp-ufs: Remove _tbl suffix from qmp_phy_init_tbl definitions Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 02/20] phy: qcom-qmp-ufs: Rename MSM8996 PHY definitions Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 03/20] phy: qcom-qmp-ufs: Move register settings to qmp_phy_cfg_tbls struct Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 04/20] phy: qcom-qmp-ufs: Add support for configuring PHY in HS Series B mode Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 05/20] phy: qcom-qmp-ufs: Add support for configuring PHY in HS G4 mode Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 06/20] phy: qcom-qmp-ufs: Move HS Rate B register setting to tbls_hs_b Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 07/20] phy: qcom-qmp-ufs: Add HS G4 mode support to SM8150 SoC Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 08/20] phy: qcom-qmp-ufs: Add HS G4 mode support to SM8250 SoC Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 09/20] phy: qcom-qmp-ufs: Add HS G4 mode support to SM8450 SoC Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 10/20] scsi: ufs: ufs-qcom: Remove un-necessary goto statements Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 11/20] scsi: ufs: ufs-qcom: Remove un-necessary WARN_ON() Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 12/20] scsi: ufs: ufs-qcom: Use bitfields where appropriate Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 13/20] scsi: ufs: ufs-qcom: Use dev_err_probe() for printing probe error Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 14/20] scsi: ufs: ufs-qcom: Fix the Qcom register name for offset 0xD0 Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 15/20] scsi: ufs: core: Add reinit_notify() callback Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 16/20] scsi: ufs: core: Add support for reinitializing the UFS device Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 17/20] scsi: ufs: ufs-qcom: Factor out the logic finding the HS Gear Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 18/20] scsi: ufs: ufs-qcom: Add support for reinitializing the UFS device Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam [this message]
2022-11-23 7:48 ` [PATCH v3 19/20] scsi: ufs: ufs-qcom: Add support for finding max gear on new platforms Manivannan Sadhasivam
2022-11-23 7:48 ` [PATCH v3 20/20] MAINTAINERS: Add myself as the maintainer for Qcom UFS driver Manivannan Sadhasivam
2022-11-23 7:48 ` Manivannan Sadhasivam
2022-11-23 18:31 ` Eric Biggers
2022-11-23 18:31 ` Eric Biggers
2022-11-24 10:13 ` Manivannan Sadhasivam
2022-11-24 10:13 ` Manivannan Sadhasivam
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