[PATCH v4 5/5] phy: samsung: ufs: support secondary ufs phy

[Alim Akhtar]

>-----Original Message-----
>From: Chanho Park [mailto:chanho61.park at samsung.com]
>Sent: Tuesday, June 7, 2022 12:59 PM
>To: Kishon Vijay Abraham I <kishon at ti.com>; Vinod Koul
><vkoul at kernel.org>; Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>;
>Alim Akhtar <alim.akhtar at samsung.com>; Rob Herring
><robh+dt at kernel.org>; Krzysztof Kozlowski
><krzysztof.kozlowski+dt at linaro.org>
>Cc: devicetree at vger.kernel.org; linux-phy at lists.infradead.org; linux-
>samsung-soc at vger.kernel.org; linux-arm-kernel at lists.infradead.org; Chanho
>Park <chanho61.park at samsung.com>
>Subject: [PATCH v4 5/5] phy: samsung: ufs: support secondary ufs phy
>
>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.
>
>Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
>Signed-off-by: Chanho Park <chanho61.park at samsung.com>
>---
Reviewed-by: Alim Akhtar <alim.akhtar at samsung.com>


> drivers/phy/samsung/phy-samsung-ufs.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
>diff --git a/drivers/phy/samsung/phy-samsung-ufs.c
>b/drivers/phy/samsung/phy-samsung-ufs.c
>index 0c933e364064..206a79c69a6c 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);
>@@ -330,6 +331,10 @@ static int samsung_ufs_phy_probe(struct
>platform_device *pdev)
> 	phy->has_symbol_clk = drvdata->has_symbol_clk;
> 	memcpy(&phy->isol, &drvdata->isol, sizeof(phy->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);
>--
>2.36.1