linux-kernel - [PATCH v3 2/6] scsi: ufs: host: ufs-exynos: Add EXYNOS_UFS_OPT_UFSPR

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Message-ID: <20240426122004.2249178-3-peter.griffin@linaro.org>
Date: Fri, 26 Apr 2024 13:20:00 +0100
From: Peter Griffin <peter.griffin@...aro.org>
To: alim.akhtar@...sung.com,
	avri.altman@....com,
	bvanassche@....org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	James.Bottomley@...senPartnership.com,
	martin.petersen@...cle.com
Cc: linux-scsi@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	tudor.ambarus@...aro.org,
	andre.draszik@...aro.org,
	saravanak@...gle.com,
	willmcvicker@...gle.com,
	kernel-team@...roid.com,
	Peter Griffin <peter.griffin@...aro.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 2/6] scsi: ufs: host: ufs-exynos: Add EXYNOS_UFS_OPT_UFSPR_SECURE option

This option is intended to be set on platforms whose ufspr
registers are only accessible via smc call (such as gs101).

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Tested-by: Will McVicker <willmcvicker@...gle.com>
---
 drivers/ufs/host/ufs-exynos.c | 4 +++-
 drivers/ufs/host/ufs-exynos.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index e8d3302f6df0..66e52c3607e2 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -1186,7 +1186,9 @@ static int exynos_ufs_init(struct ufs_hba *hba)
 	if (ret)
 		goto out;
 	exynos_ufs_specify_phy_time_attr(ufs);
-	exynos_ufs_config_smu(ufs);
+
+	if (!(ufs->opts & EXYNOS_UFS_OPT_UFSPR_SECURE))
+		exynos_ufs_config_smu(ufs);
 
 	hba->host->dma_alignment = SZ_4K - 1;
 	return 0;
diff --git a/drivers/ufs/host/ufs-exynos.h b/drivers/ufs/host/ufs-exynos.h
index a4bd6646d7f1..0fc21b6bbfcd 100644
--- a/drivers/ufs/host/ufs-exynos.h
+++ b/drivers/ufs/host/ufs-exynos.h
@@ -221,6 +221,7 @@ struct exynos_ufs {
 #define EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX	BIT(3)
 #define EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER	BIT(4)
 #define EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR	BIT(5)
+#define EXYNOS_UFS_OPT_UFSPR_SECURE		BIT(6)
 };
 
 #define for_each_ufs_rx_lane(ufs, i) \
-- 
2.44.0.769.g3c40516874-goog