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Fri, 08 Mar 2024 00:03:19 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 8 Mar 2024 15:02:43 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 8 Mar 2024 15:02:43 +0800 From: To: , , , , CC: , , , , , , , , , , , , , , Subject: [PATCH v1 2/7] ufs: host: mediatek: tx skew fix Date: Fri, 8 Mar 2024 15:02:36 +0800 Message-ID: <20240308070241.9163-3-peter.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20240308070241.9163-1-peter.wang@mediatek.com> References: <20240308070241.9163-1-peter.wang@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--5.311800-8.000000 X-TMASE-MatchedRID: lR9wedxBitsMQLXc2MGSbIzb2GR6Ttd39Nx/wC/5BIDfc2Xd6VJ+ytoz beODnXpl09NQNrxIpFYBtjkcfRMmqe+c5IL6OTgO4RtSDjG+z7DKi5Jqc8KFNBqhK4nm9OcKNkf UjJS6Xszi8zVgXoAltsIJ+4gwXrEtIAcCikR3vq/ml/GwKJX8pke8pSYa1RYLU4AcjuzCka1q49 6rsm52bOKtWn1dFJSx X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--5.311800-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 333B9FAA4FAD749E22D88A49E36412FBFDE5C817EA0E25F6C0475BC3A60BA9582000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240307_230327_210242_606E41EE X-CRM114-Status: GOOD ( 11.50 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Peter Wang Mediatek tx skew issue fix by check dts setting and vendor/model. Then set PA_TACTIVATE set 8 Signed-off-by: Peter Wang Reviewed-by: Avri Altman Acked-by: Chun-Hung Wu --- 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 {