From nobody Wed Nov 27 16:46:29 2024 Received: from mail-wm1-f48.google.com (mail-wm1-f48.google.com [209.85.128.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D197B191F70 for ; Wed, 9 Oct 2024 11:21:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728472915; cv=none; b=WeI+ndJFfOpOgZcho4TUmXLgpF8I8zgQRku6yOuiggGuj68sJZRzQYEhuUOa4LTSV6KgH1lVtK3+uvUTFIQCKFVKmP6f47LyfMHzMT+dDZdTK2hxutopAkjlOF/ejvbtWXrshI98+ThoMC1tukvUDMV2jlqumGEL6GCxDITyzGU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728472915; c=relaxed/simple; bh=hDzFSe1lRi4yyuPHSIaucwMqr2mLXU7tOlTPgv8XUzo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YRIF8Mbd6+qBYLrwv6l7ZaWPvdIFNEWaC59GarSHIkBf7BLl4V09IzR8JgUvKwMB2FRcn7tMN2kdWux8rkMG5pwUYIxhJ/w9aAKevBL55J0vxFNZ3QbBz/gluFxO1OXp81lbiDunEZjd1lTQus6nyjjVdYtZx78LmrroKd5mJoY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=bNnL24xU; arc=none smtp.client-ip=209.85.128.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="bNnL24xU" Received: by mail-wm1-f48.google.com with SMTP id 5b1f17b1804b1-42ca4e0299eso59920125e9.2 for ; Wed, 09 Oct 2024 04:21:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1728472911; x=1729077711; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ghtUYLBlSjf3IggEwHExig2CKcpoS8dsJVFld1RzVuU=; b=bNnL24xUF+gpLihMlmHw7IUZziKucfwCEJ1OvruipQ+p+WQ0tCe5xMA6UP3zi0ptx5 XTlw6h7d0HQBGFcJ5qqIryMpDt7WleHdfQ8YaN3mGy7+UEcqcfJPCNM8oDEtUOU1sNt/ fmS+NxZkOkKsIgQJZDsYJBkg+a8mnQFQfhxMA/tzdGt1yggopRmy1KOeIYSgp+9ZH+zx PzjmYoFGaTTVEVrrIFy1Ghkm4t1aM02WVZYwOXzs0Sve5fXFCoTJB/9nXRt03FbaT2wz Gaicrk5LbZOoiDdGzY+5n59zPtqwhkXDYN57wRTTZJHpMMQqcxro03nfl2ObAdNmtCku bUyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728472911; x=1729077711; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ghtUYLBlSjf3IggEwHExig2CKcpoS8dsJVFld1RzVuU=; b=YeLh5T/8tWXbb6VEc98A0Fl4WR3YaKzsWYYnFDg4JTzj8ndPMyCIC4r8puOPl4k+SZ +Q9BUuwhyFEnapFN/xKZ60b3/1SDb++26pQ9iD8SqwNWuqKaLvFqPRRlU6ycP59dHoRg GDxQi+bwsuTgQJRnAsRxa28haslqMhnHVNHzIecx58+4AecExHbwfuebXzPlyoT3HBNn qZUboIjwE37JvKQ7sjco1uSzWqsxeOUOaE+aHwk7fVBvSyqg23UsNXF1ngsClTE4jUQf kEnuoWMrQ/Ade5mWNAaK7kVPDghGa0R9dWUnT1Z/BpCS+3YHwEKH5iQdbh4wA0a6xCwK sQLQ== X-Forwarded-Encrypted: i=1; AJvYcCVMhuzyi2197cdvYuu45A500hUGxASWOQz32iT4Zx7xQdmYBmY1vGf55lBc8AMzFafceGnhg7NlfmUTKzM=@vger.kernel.org X-Gm-Message-State: AOJu0YwwojY167JhOzuwIRnAUSPg7d2y/iNv/OpZ8YNT6/I4azg8zOl+ quKNl5kT1KpvYUbPo4fNzcsK9PWe4eUkxcp8dL4JV3zLbiGdvatcnvuW5q0TsjI= X-Google-Smtp-Source: AGHT+IEJX2RjpFeLUHsr4Qx7o7zdf3TWL+5xxAUSFTySxWEYnSA6UXjwYDBXPN59NyQNksavaCy8pQ== X-Received: by 2002:a05:600c:3544:b0:42f:7c9e:1f96 with SMTP id 5b1f17b1804b1-430ccf091a7mr14596575e9.1.1728472911183; Wed, 09 Oct 2024 04:21:51 -0700 (PDT) Received: from gpeter-l.lan ([145.224.65.7]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4310c3dcdcbsm12331445e9.0.2024.10.09.04.21.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2024 04:21:49 -0700 (PDT) From: Peter Griffin To: alim.akhtar@samsung.com, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com, avri.altman@wdc.com, bvanassche@acm.org, krzk@kernel.org Cc: tudor.ambarus@linaro.org, andre.draszik@linaro.org, kernel-team@android.com, willmcvicker@google.com, linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Griffin Subject: [PATCH 1/7] scsi: ufs: exynos: Allow UFS Gear 4 Date: Wed, 9 Oct 2024 12:21:35 +0100 Message-ID: <20241009112141.1771087-2-peter.griffin@linaro.org> X-Mailer: git-send-email 2.47.0.rc0.187.ge670bccf7e-goog In-Reply-To: <20241009112141.1771087-1-peter.griffin@linaro.org> References: <20241009112141.1771087-1-peter.griffin@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" UFS Gear 4 offers faster speeds, and better power usage so lets enable it. Currently ufshcd_init_host_params() sets UFS_HS_G3 as a default, so even if the device supports G4 we end up negotiating down to G3. For SoCs like gs101 which have a UFS major controller version of 3 or above advertise Gear 4. This then allows a Gear 4 link on Pixel 6. For earlier controller versions keep the current default behaviour of reporting G3. Signed-off-by: Peter Griffin --- drivers/ufs/host/ufs-exynos.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c index 9ec318ef52bf..e25de4b86ac0 100644 --- a/drivers/ufs/host/ufs-exynos.c +++ b/drivers/ufs/host/ufs-exynos.c @@ -771,6 +771,21 @@ static void exynos_ufs_config_sync_pattern_mask(struct= exynos_ufs *ufs, exynos_ufs_disable_ov_tm(hba); } =20 +#define UFS_HW_VER_MAJOR_MASK GENMASK(15, 8) + +static u32 exynos_ufs_get_hs_gear(struct ufs_hba *hba) +{ + u8 major; + + major =3D FIELD_GET(UFS_HW_VER_MAJOR_MASK, hba->ufs_version); + + if (major >=3D 3) + return UFS_HS_G4; + + /* Default is HS-G3 */ + return UFS_HS_G3; +} + static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba, struct ufs_pa_layer_attr *dev_max_params, struct ufs_pa_layer_attr *dev_req_params) @@ -787,6 +802,8 @@ static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba, } =20 ufshcd_init_host_params(&host_params); + /* This driver only support symmetric gear setting e.g. hs_tx_gear =3D=3D= hs_rx_gear */ + host_params.hs_tx_gear =3D host_params.hs_rx_gear =3D exynos_ufs_get_hs_g= ear(hba); =20 ret =3D ufshcd_negotiate_pwr_params(&host_params, dev_max_params, dev_req= _params); if (ret) { --=20 2.47.0.rc0.187.ge670bccf7e-goog