diff mbox series

[v1,2/7] ufs: host: mediatek: tx skew fix

Message ID 20240308070241.9163-3-peter.wang@mediatek.com (mailing list archive)
State New
Headers show
Series ufs: host: mediatek: Provide features and fixes in MediaTek platforms | expand

Commit Message

Peter Wang (王信友) March 8, 2024, 7:02 a.m. UTC 
From: Peter Wang <peter.wang@mediatek.com>

Mediatek tx skew issue fix by check dts setting and vendor/model.
Then set PA_TACTIVATE set 8

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
---
 drivers/ufs/host/ufs-mediatek.c | 21 +++++++++++++++++++++
 drivers/ufs/host/ufs-mediatek.h |  1 +
 2 files changed, 22 insertions(+)

Comments

Avri Altman March 8, 2024, 8:41 a.m. UTC | #1 
> From: Peter Wang <peter.wang@mediatek.com>
> 
> Mediatek tx skew issue fix by check dts setting and vendor/model.
> Then set PA_TACTIVATE set 8
> 
> Signed-off-by: Peter Wang <peter.wang@mediatek.com>
> ---
>  drivers/ufs/host/ufs-mediatek.c | 21 +++++++++++++++++++++
> drivers/ufs/host/ufs-mediatek.h |  1 +
>  2 files changed, 22 insertions(+)
> 
> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
> index 6fc6fa2ea5bd..0262e8994236 100644
> --- a/drivers/ufs/host/ufs-mediatek.c
> +++ b/drivers/ufs/host/ufs-mediatek.c
> @@ -119,6 +119,13 @@ static bool ufs_mtk_is_pmc_via_fastauto(struct
> ufs_hba *hba)
>         return !!(host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO);  }
> 
> +static bool ufs_mtk_is_tx_skew_fix(struct ufs_hba *hba) {
> +       struct ufs_mtk_host *host = ufshcd_get_variant(hba);
> +
> +       return !!(host->caps & UFS_MTK_CAP_TX_SKEW_FIX); }
> +
>  static bool ufs_mtk_is_allow_vccqx_lpm(struct ufs_hba *hba)  {
>         struct ufs_mtk_host *host = ufshcd_get_variant(hba); @@ -630,6 +637,9
> @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba)
>         if (of_property_read_bool(np, "mediatek,ufs-pmc-via-fastauto"))
>                 host->caps |= UFS_MTK_CAP_PMC_VIA_FASTAUTO;
> 
> +       if (of_property_read_bool(np, "mediatek,ufs-tx-skew-fix"))
> +               host->caps |= UFS_MTK_CAP_TX_SKEW_FIX;
> +
>         dev_info(hba->dev, "caps: 0x%x", host->caps);  }
> 
> @@ -1423,6 +1433,17 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba
> *hba)
>         if (mid == UFS_VENDOR_SAMSUNG) {
>                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
>                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 10);
> +       } else if (mid == UFS_VENDOR_MICRON) {
Is this a quirk for micron? Why not implemented as a quirk?
And go for all this trouble setting it in the dt etc.

Thanks,
Avri

> +               /* Only for the host which have TX skew issue */
> +               if (ufs_mtk_is_tx_skew_fix(hba) &&
> +                       (STR_PRFX_EQUAL("MT128GBCAV2U31", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT256GBCAV4U31", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT512GBCAV8U31", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT256GBEAX4U40", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT512GAYAX4U40", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT001TAYAX8U40", dev_info->model))) {
> +                       ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 8);
> +               }
>         }
> 
>         /*
> diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h
> index 0720da2f1402..146c25080599 100644
> --- a/drivers/ufs/host/ufs-mediatek.h
> +++ b/drivers/ufs/host/ufs-mediatek.h
> @@ -142,6 +142,7 @@ enum ufs_mtk_host_caps {
>          */
>         UFS_MTK_CAP_ALLOW_VCCQX_LPM            = 1 << 5,
>         UFS_MTK_CAP_PMC_VIA_FASTAUTO           = 1 << 6,
> +       UFS_MTK_CAP_TX_SKEW_FIX                = 1 << 7,
>  };
> 
>  struct ufs_mtk_crypt_cfg {
> --
> 2.18.0
Peter Wang (王信友) March 8, 2024, 8:52 a.m. UTC | #2 
On Fri, 2024-03-08 at 08:41 +0000, Avri Altman wrote:
> 
> Is this a quirk for micron? Why not implemented as a quirk?
> And go for all this trouble setting it in the dt etc.
> 
> Thanks,
> Avri
> 

Hi Arvi,

It is not for micron only. May have another device need this patch.
But corrently we only find micron divcie need host change TACTIVATE
value. And it is depend on host design, so we use dts to check if host
need this patch for dedicated ufs device.


Thanks.
Peter
Avri Altman March 8, 2024, 8:56 a.m. UTC | #3 
> From: Peter Wang <peter.wang@mediatek.com>
> 
> Mediatek tx skew issue fix by check dts setting and vendor/model.
> Then set PA_TACTIVATE set 8
> 
> Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>


> ---
>  drivers/ufs/host/ufs-mediatek.c | 21 +++++++++++++++++++++
> drivers/ufs/host/ufs-mediatek.h |  1 +
>  2 files changed, 22 insertions(+)
> 
> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
> index 6fc6fa2ea5bd..0262e8994236 100644
> --- a/drivers/ufs/host/ufs-mediatek.c
> +++ b/drivers/ufs/host/ufs-mediatek.c
> @@ -119,6 +119,13 @@ static bool ufs_mtk_is_pmc_via_fastauto(struct
> ufs_hba *hba)
>         return !!(host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO);  }
> 
> +static bool ufs_mtk_is_tx_skew_fix(struct ufs_hba *hba) {
> +       struct ufs_mtk_host *host = ufshcd_get_variant(hba);
> +
> +       return !!(host->caps & UFS_MTK_CAP_TX_SKEW_FIX); }
> +
>  static bool ufs_mtk_is_allow_vccqx_lpm(struct ufs_hba *hba)  {
>         struct ufs_mtk_host *host = ufshcd_get_variant(hba); @@ -630,6 +637,9
> @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba)
>         if (of_property_read_bool(np, "mediatek,ufs-pmc-via-fastauto"))
>                 host->caps |= UFS_MTK_CAP_PMC_VIA_FASTAUTO;
> 
> +       if (of_property_read_bool(np, "mediatek,ufs-tx-skew-fix"))
> +               host->caps |= UFS_MTK_CAP_TX_SKEW_FIX;
> +
>         dev_info(hba->dev, "caps: 0x%x", host->caps);  }
> 
> @@ -1423,6 +1433,17 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba
> *hba)
>         if (mid == UFS_VENDOR_SAMSUNG) {
>                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
>                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 10);
> +       } else if (mid == UFS_VENDOR_MICRON) {
> +               /* Only for the host which have TX skew issue */
> +               if (ufs_mtk_is_tx_skew_fix(hba) &&
> +                       (STR_PRFX_EQUAL("MT128GBCAV2U31", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT256GBCAV4U31", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT512GBCAV8U31", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT256GBEAX4U40", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT512GAYAX4U40", dev_info->model) ||
> +                       STR_PRFX_EQUAL("MT001TAYAX8U40", dev_info->model))) {
> +                       ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 8);
> +               }
>         }
> 
>         /*
> diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h
> index 0720da2f1402..146c25080599 100644
> --- a/drivers/ufs/host/ufs-mediatek.h
> +++ b/drivers/ufs/host/ufs-mediatek.h
> @@ -142,6 +142,7 @@ enum ufs_mtk_host_caps {
>          */
>         UFS_MTK_CAP_ALLOW_VCCQX_LPM            = 1 << 5,
>         UFS_MTK_CAP_PMC_VIA_FASTAUTO           = 1 << 6,
> +       UFS_MTK_CAP_TX_SKEW_FIX                = 1 << 7,
>  };
> 
>  struct ufs_mtk_crypt_cfg {
> --
> 2.18.0
Bart Van Assche March 15, 2024, 2:34 a.m. UTC | #4 
On 3/7/24 23:02, peter.wang@mediatek.com wrote:
> +static bool ufs_mtk_is_tx_skew_fix(struct ufs_hba *hba)
> +{
> +	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
> +
> +	return !!(host->caps & UFS_MTK_CAP_TX_SKEW_FIX);
> +}

Same comment here - please leave out the !!

Thanks,

Bart.
Chun-Hung Wu (巫駿宏) March 15, 2024, 2:35 a.m. UTC | #5 
On Fri, 2024-03-08 at 15:02 +0800, peter.wang@mediatek.com wrote:
> From: Peter Wang <peter.wang@mediatek.com>
> 
> Mediatek tx skew issue fix by check dts setting and vendor/model.
> Then set PA_TACTIVATE set 8
> 
> Signed-off-by: Peter Wang <peter.wang@mediatek.com>
> ---
>  drivers/ufs/host/ufs-mediatek.c | 21 +++++++++++++++++++++
>  drivers/ufs/host/ufs-mediatek.h |  1 +
>  2 files changed, 22 insertions(+)
> 
> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-
> mediatek.c
> index 6fc6fa2ea5bd..0262e8994236 100644
> --- a/drivers/ufs/host/ufs-mediatek.c
> +++ b/drivers/ufs/host/ufs-mediatek.c
> @@ -119,6 +119,13 @@ static bool ufs_mtk_is_pmc_via_fastauto(struct
> ufs_hba *hba)
>  	return !!(host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO);
>  }
>  
> +static bool ufs_mtk_is_tx_skew_fix(struct ufs_hba *hba)
> +{
> +	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
> +
> +	return !!(host->caps & UFS_MTK_CAP_TX_SKEW_FIX);
> +}
> +
>  static bool ufs_mtk_is_allow_vccqx_lpm(struct ufs_hba *hba)
>  {
>  	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
> @@ -630,6 +637,9 @@ static void ufs_mtk_init_host_caps(struct ufs_hba
> *hba)
>  	if (of_property_read_bool(np, "mediatek,ufs-pmc-via-fastauto"))
>  		host->caps |= UFS_MTK_CAP_PMC_VIA_FASTAUTO;
>  
> +	if (of_property_read_bool(np, "mediatek,ufs-tx-skew-fix"))
> +		host->caps |= UFS_MTK_CAP_TX_SKEW_FIX;
> +
>  	dev_info(hba->dev, "caps: 0x%x", host->caps);
>  }
>  
> @@ -1423,6 +1433,17 @@ static int ufs_mtk_apply_dev_quirks(struct
> ufs_hba *hba)
>  	if (mid == UFS_VENDOR_SAMSUNG) {
>  		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
>  		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 10);
> +	} else if (mid == UFS_VENDOR_MICRON) {
> +		/* Only for the host which have TX skew issue */
> +		if (ufs_mtk_is_tx_skew_fix(hba) &&
> +			(STR_PRFX_EQUAL("MT128GBCAV2U31", dev_info-
> >model) ||
> +			STR_PRFX_EQUAL("MT256GBCAV4U31", dev_info-
> >model) ||
> +			STR_PRFX_EQUAL("MT512GBCAV8U31", dev_info-
> >model) ||
> +			STR_PRFX_EQUAL("MT256GBEAX4U40", dev_info-
> >model) ||
> +			STR_PRFX_EQUAL("MT512GAYAX4U40", dev_info-
> >model) ||
> +			STR_PRFX_EQUAL("MT001TAYAX8U40", dev_info-
> >model))) {
> +			ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
> 8);
> +		}
>  	}
>  
>  	/*
> diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-
> mediatek.h
> index 0720da2f1402..146c25080599 100644
> --- a/drivers/ufs/host/ufs-mediatek.h
> +++ b/drivers/ufs/host/ufs-mediatek.h
> @@ -142,6 +142,7 @@ enum ufs_mtk_host_caps {
>  	 */
>  	UFS_MTK_CAP_ALLOW_VCCQX_LPM            = 1 << 5,
>  	UFS_MTK_CAP_PMC_VIA_FASTAUTO           = 1 << 6,
> +	UFS_MTK_CAP_TX_SKEW_FIX                = 1 << 7,
>  };
>  
>  struct ufs_mtk_crypt_cfg {

Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com>
diff mbox series

Patch

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index 6fc6fa2ea5bd..0262e8994236 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -119,6 +119,13 @@  static bool ufs_mtk_is_pmc_via_fastauto(struct ufs_hba *hba)
 	return !!(host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO);
 }
 
+static bool ufs_mtk_is_tx_skew_fix(struct ufs_hba *hba)
+{
+	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
+
+	return !!(host->caps & UFS_MTK_CAP_TX_SKEW_FIX);
+}
+
 static bool ufs_mtk_is_allow_vccqx_lpm(struct ufs_hba *hba)
 {
 	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
@@ -630,6 +637,9 @@  static void ufs_mtk_init_host_caps(struct ufs_hba *hba)
 	if (of_property_read_bool(np, "mediatek,ufs-pmc-via-fastauto"))
 		host->caps |= UFS_MTK_CAP_PMC_VIA_FASTAUTO;
 
+	if (of_property_read_bool(np, "mediatek,ufs-tx-skew-fix"))
+		host->caps |= UFS_MTK_CAP_TX_SKEW_FIX;
+
 	dev_info(hba->dev, "caps: 0x%x", host->caps);
 }
 
@@ -1423,6 +1433,17 @@  static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba)
 	if (mid == UFS_VENDOR_SAMSUNG) {
 		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
 		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 10);
+	} else if (mid == UFS_VENDOR_MICRON) {
+		/* Only for the host which have TX skew issue */
+		if (ufs_mtk_is_tx_skew_fix(hba) &&
+			(STR_PRFX_EQUAL("MT128GBCAV2U31", dev_info->model) ||
+			STR_PRFX_EQUAL("MT256GBCAV4U31", dev_info->model) ||
+			STR_PRFX_EQUAL("MT512GBCAV8U31", dev_info->model) ||
+			STR_PRFX_EQUAL("MT256GBEAX4U40", dev_info->model) ||
+			STR_PRFX_EQUAL("MT512GAYAX4U40", dev_info->model) ||
+			STR_PRFX_EQUAL("MT001TAYAX8U40", dev_info->model))) {
+			ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 8);
+		}
 	}
 
 	/*
diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h
index 0720da2f1402..146c25080599 100644
--- a/drivers/ufs/host/ufs-mediatek.h
+++ b/drivers/ufs/host/ufs-mediatek.h
@@ -142,6 +142,7 @@  enum ufs_mtk_host_caps {
 	 */
 	UFS_MTK_CAP_ALLOW_VCCQX_LPM            = 1 << 5,
 	UFS_MTK_CAP_PMC_VIA_FASTAUTO           = 1 << 6,
+	UFS_MTK_CAP_TX_SKEW_FIX                = 1 << 7,
 };
 
 struct ufs_mtk_crypt_cfg {