linux-kernel - [PATCH 2/2] phy: exynos-mipi-video: introduce support for exynos7870

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Message-Id: <20250612-exynos7870-mipi-phy-v1-2-3fff0b62d9d3@disroot.org>
Date: Thu, 12 Jun 2025 20:39:30 +0530
From: Kaustabh Chakraborty <kauschluss@...root.org>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Marek Szyprowski <m.szyprowski@...sung.com>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Alim Akhtar <alim.akhtar@...sung.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, linux-phy@...ts.infradead.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 Kaustabh Chakraborty <kauschluss@...root.org>
Subject: [PATCH 2/2] phy: exynos-mipi-video: introduce support for
 exynos7870

Add support for Exynos7870 in the existing MIPI CSIS/DSIM driver. The
SoC has one DSIM phy and three CSIS phys.

Signed-off-by: Kaustabh Chakraborty <kauschluss@...root.org>
---
 drivers/phy/samsung/phy-exynos-mipi-video.c | 52 +++++++++++++++++++++++++++++
 include/linux/soc/samsung/exynos-regs-pmu.h |  5 +++
 2 files changed, 57 insertions(+)

diff --git a/drivers/phy/samsung/phy-exynos-mipi-video.c b/drivers/phy/samsung/phy-exynos-mipi-video.c
index f6756a609a9a0774ecb6e27cf96726891683636c..b184923b9b400f0d536a913bdf32f3156c0a1854 100644
--- a/drivers/phy/samsung/phy-exynos-mipi-video.c
+++ b/drivers/phy/samsung/phy-exynos-mipi-video.c
@@ -213,6 +213,55 @@ static const struct mipi_phy_device_desc exynos5433_mipi_phy = {
 	},
 };
 
+static const struct mipi_phy_device_desc exynos7870_mipi_phy = {
+	.num_regmaps = 3,
+	.regmap_names = {
+		"samsung,pmu-syscon",
+		"samsung,disp-sysreg",
+		"samsung,cam-sysreg"
+	},
+	.num_phys = 4,
+	.phys = {
+		{
+			/* EXYNOS_MIPI_PHY_ID_CSIS0 */
+			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM0,
+			.enable_val = EXYNOS4_PHY_ENABLE,
+			.enable_reg = EXYNOS7870_MIPI_PHY_CONTROL0,
+			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
+			.resetn_val = BIT(0),
+			.resetn_reg = 0,
+			.resetn_map = EXYNOS_MIPI_REGMAP_CAM0,
+		}, {
+			/* EXYNOS_MIPI_PHY_ID_DSIM0 */
+			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS0,
+			.enable_val = EXYNOS4_PHY_ENABLE,
+			.enable_reg = EXYNOS7870_MIPI_PHY_CONTROL0,
+			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
+			.resetn_val = BIT(0),
+			.resetn_reg = 0,
+			.resetn_map = EXYNOS_MIPI_REGMAP_DISP,
+		}, {
+			/* EXYNOS_MIPI_PHY_ID_CSIS1 */
+			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_NONE,
+			.enable_val = EXYNOS4_PHY_ENABLE,
+			.enable_reg = EXYNOS7870_MIPI_PHY_CONTROL1,
+			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
+			.resetn_val = BIT(1),
+			.resetn_reg = 0,
+			.resetn_map = EXYNOS_MIPI_REGMAP_CAM0,
+		}, {
+			/* EXYNOS_MIPI_PHY_ID_CSIS2 */
+			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_NONE,
+			.enable_val = EXYNOS4_PHY_ENABLE,
+			.enable_reg = EXYNOS7870_MIPI_PHY_CONTROL2,
+			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
+			.resetn_val = BIT(2),
+			.resetn_reg = 0,
+			.resetn_map = EXYNOS_MIPI_REGMAP_CAM0,
+		},
+	},
+};
+
 struct exynos_mipi_video_phy {
 	struct regmap *regmaps[EXYNOS_MIPI_REGMAPS_NUM];
 	int num_phys;
@@ -351,6 +400,9 @@ static const struct of_device_id exynos_mipi_video_phy_of_match[] = {
 	}, {
 		.compatible = "samsung,exynos5433-mipi-video-phy",
 		.data = &exynos5433_mipi_phy,
+	}, {
+		.compatible = "samsung,exynos7870-mipi-video-phy",
+		.data = &exynos7870_mipi_phy,
 	},
 	{ /* sentinel */ },
 };
diff --git a/include/linux/soc/samsung/exynos-regs-pmu.h b/include/linux/soc/samsung/exynos-regs-pmu.h
index 1a2c0e0838f99821151661878f022f2129a0c19b..8fd59994bca76a6bf21306337f0b47ccb5a22adc 100644
--- a/include/linux/soc/samsung/exynos-regs-pmu.h
+++ b/include/linux/soc/samsung/exynos-regs-pmu.h
@@ -662,6 +662,11 @@
 #define EXYNOS5433_PAD_RETENTION_UFS_OPTION			(0x3268)
 #define EXYNOS5433_PAD_RETENTION_FSYSGENIO_OPTION		(0x32A8)
 
+/* For Exynos7870 */
+#define EXYNOS7870_MIPI_PHY_CONTROL0				(0x070c)
+#define EXYNOS7870_MIPI_PHY_CONTROL1				(0x0714)
+#define EXYNOS7870_MIPI_PHY_CONTROL2				(0x0734)
+
 /* For Tensor GS101 */
 /* PMU ALIVE */
 #define GS101_SYSIP_DAT0					(0x810)

-- 
2.49.0