linux-kernel - [PATCH v2 5/6] arm64: dts: exynos: exynos8895-dreamlte: enable support for microSD storage

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250104164321.333669-6-ivo.ivanov.ivanov1@gmail.com>
Date: Sat,  4 Jan 2025 18:43:20 +0200
From: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Jaehoon Chung <jh80.chung@...sung.com>
Cc: linux-mmc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 5/6] arm64: dts: exynos: exynos8895-dreamlte: enable support for microSD storage

Enable MMC for the Samsung Galaxy S8, used as external microSD card
storage. Since the main PMIC is currently not supported, assume the
required regulators are enabled by the previous bootloader.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
---
 .../boot/dts/exynos/exynos8895-dreamlte.dts   | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos8895-dreamlte.dts b/arch/arm64/boot/dts/exynos/exynos8895-dreamlte.dts
index 3a376ab2b..6c4f8d4a9 100644
--- a/arch/arm64/boot/dts/exynos/exynos8895-dreamlte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos8895-dreamlte.dts
@@ -16,6 +16,10 @@ / {
 	compatible = "samsung,dreamlte", "samsung,exynos8895";
 	chassis-type = "handset";
 
+	aliases {
+		mmc0 = &mmc;
+	};
+
 	chosen {
 		#address-cells = <2>;
 		#size-cells = <1>;
@@ -95,6 +99,27 @@ &oscclk {
 	clock-frequency = <26000000>;
 };
 
+&mmc {
+	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_bus1 &sd2_bus4 &sd2_cd>;
+	pinctrl-names = "default";
+
+	bus-width = <4>;
+	card-detect-delay = <200>;
+	cd-gpios = <&gpa1 5 GPIO_ACTIVE_LOW>;
+	clock-frequency = <800000000>;
+	disable-wp;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+
+	/* TODO: Add regulators once PMIC is implemented */
+
+	samsung,dw-mshc-ciu-div = <3>;
+	samsung,dw-mshc-ddr-timing = <1 2>;
+	samsung,dw-mshc-sdr-timing = <0 3>;
+
+	status = "okay";
+};
+
 &pinctrl_alive {
 	key_power: key-power-pins {
 		samsung,pins = "gpa2-4";
@@ -123,4 +148,11 @@ key_wink: key-wink-pins {
 		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
 		samsung,pin-drv = <EXYNOS7_PIN_DRV_LV1>;
 	};
+
+	sd2_cd: sd2-cd-pins {
+		samsung,pins = "gpa1-5";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
+		samsung,pin-drv = <EXYNOS7_PIN_DRV_LV4>;
+	};
 };
-- 
2.43.0