linux-kernel - [PATCH v4 5/6] ufs: host: ufs-exynos: add mphy apb clock mask

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Date:   Fri, 10 Jun 2022 16:11:18 +0530
From:   Alim Akhtar <alim.akhtar@...sung.com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, linux-phy@...ts.infradead.org
Cc:     devicetree@...r.kernel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, vkoul@...nel.org,
        avri.altman@....com, bvanassche@....org,
        martin.petersen@...cle.com, chanho61.park@...sung.com,
        pankaj.dubey@...sung.com, Alim Akhtar <alim.akhtar@...sung.com>
Subject: [PATCH v4 5/6] ufs: host: ufs-exynos: add mphy apb clock mask

Bit[3] of HCI_CLKSTOP_CTRL register is for enabling/disabling MPHY APB
clock. Lets add it to CLK_STOP_MASK, so that the same can be controlled
during clock masking/unmasking.

Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
Reviewed-by: Chanho Park <chanho61.park@...sung.com>
Tested-by: Chanho Park <chanho61.park@...sung.com>
---
 drivers/ufs/host/ufs-exynos.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index a81d8cbd542f..cc128aff8871 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -52,11 +52,12 @@
 #define HCI_ERR_EN_DME_LAYER	0x88
 #define HCI_CLKSTOP_CTRL	0xB0
 #define REFCLKOUT_STOP		BIT(4)
+#define MPHY_APBCLK_STOP	BIT(3)
 #define REFCLK_STOP		BIT(2)
 #define UNIPRO_MCLK_STOP	BIT(1)
 #define UNIPRO_PCLK_STOP	BIT(0)
 #define CLK_STOP_MASK		(REFCLKOUT_STOP | REFCLK_STOP |\
-				 UNIPRO_MCLK_STOP |\
+				 UNIPRO_MCLK_STOP | MPHY_APBCLK_STOP|\
 				 UNIPRO_PCLK_STOP)
 #define HCI_MISC		0xB4
 #define REFCLK_CTRL_EN		BIT(7)
-- 
2.25.1