[PATCH 2/4] phy: samsung: ufs: support secondary ufs phy

[Chanho Park]

To support secondary ufs phy device, we need to get an offset for phy
isolation from the syscon DT node. If the first index argument of the
node is existing, we can read the offset value and set it as isol->offset.
To allow this, we should drop the const qualifier of struct pmu_isol.

Signed-off-by: Chanho Park <chanho61.park at samsung.com>
---
 drivers/phy/samsung/phy-samsung-ufs.c | 7 ++++++-
 drivers/phy/samsung/phy-samsung-ufs.h | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/samsung/phy-samsung-ufs.c b/drivers/phy/samsung/phy-samsung-ufs.c
index 602ddef259eb..bb0f8e481a4b 100644
--- a/drivers/phy/samsung/phy-samsung-ufs.c
+++ b/drivers/phy/samsung/phy-samsung-ufs.c
@@ -288,6 +288,7 @@ static int samsung_ufs_phy_probe(struct platform_device *pdev)
 	struct phy *gen_phy;
 	struct phy_provider *phy_provider;
 	const struct samsung_ufs_phy_drvdata *drvdata;
+	u32 isol_offset;
 	int err = 0;
 
 	match = of_match_node(samsung_ufs_phy_match, dev->of_node);
@@ -328,7 +329,11 @@ static int samsung_ufs_phy_probe(struct platform_device *pdev)
 	phy->dev = dev;
 	phy->drvdata = drvdata;
 	phy->cfg = (struct samsung_ufs_phy_cfg **)drvdata->cfg;
-	phy->isol = &drvdata->isol;
+	phy->isol = (struct pmu_isol *)&drvdata->isol;
+	if (!of_property_read_u32_index(dev->of_node, "samsung,pmu-syscon", 1,
+					&isol_offset))
+		phy->isol->offset = isol_offset;
+
 	phy->lane_cnt = PHY_DEF_LANE_CNT;
 
 	phy_set_drvdata(gen_phy, phy);
diff --git a/drivers/phy/samsung/phy-samsung-ufs.h b/drivers/phy/samsung/phy-samsung-ufs.h
index 91a0e9f94f98..75dc533273f9 100644
--- a/drivers/phy/samsung/phy-samsung-ufs.h
+++ b/drivers/phy/samsung/phy-samsung-ufs.h
@@ -122,7 +122,7 @@ struct samsung_ufs_phy {
 	struct clk *rx1_symbol_clk;
 	const struct samsung_ufs_phy_drvdata *drvdata;
 	struct samsung_ufs_phy_cfg **cfg;
-	const struct pmu_isol *isol;
+	struct pmu_isol *isol;
 	u8 lane_cnt;
 	int ufs_phy_state;
 	enum phy_mode mode;
-- 
2.36.1