linux-kernel - [PATCH v1 11/14] ARM: dts: imx6dl-colibri: Add usdhc1 sleep pin configuration

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]

Date:   Mon, 14 Mar 2022 17:29:55 +0100
From:   Max Krummenacher <max.oss.09@...il.com>
To:     max.krummenacher@...adex.com
Cc:     Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 11/14] ARM: dts: imx6dl-colibri: Add usdhc1 sleep pin configuration

The Toradex board Iris V2 has a SD-card slot with switchable
power.
Add a pinctrl sleep used when the card power is off to avoid
backfeeding to the card and add the "sleep" pinctrl to the
usdhc1 controller.

Signed-off-by: Max Krummenacher <max.krummenacher@...adex.com>
---

 arch/arm/boot/dts/imx6qdl-colibri.dtsi | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index 1c3c34bbfe98..c383e0e4110c 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -680,10 +680,11 @@
 	bus-width = <4>;
 	no-1-8-v;
 	disable-wp;
-	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
 	pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_mmc_cd>;
 	pinctrl-1 = <&pinctrl_usdhc1_100mhz &pinctrl_mmc_cd>;
 	pinctrl-2 = <&pinctrl_usdhc1_200mhz &pinctrl_mmc_cd>;
+	pinctrl-3 = <&pinctrl_usdhc1_sleep &pinctrl_mmc_cd_sleep>;
 	vmmc-supply = <&reg_module_3v3>;
 	vqmmc-supply = <&vgen3_reg>;
 	status = "disabled";
@@ -951,6 +952,12 @@
 		>;
 	};
 
+	pinctrl_mmc_cd_sleep: mmccdslpgrp {
+		fsl,pins = <
+			MX6QDL_PAD_NANDF_D5__GPIO2_IO05	0x0
+		>;
+	};
+
 	pinctrl_pwm1: pwm1grp {
 		fsl,pins = <
 			MX6QDL_PAD_GPIO_9__PWM1_OUT	0x1b0b1
@@ -1097,6 +1104,18 @@
 		>;
 	};
 
+	/* avoid backfeeding with removed card power */
+	pinctrl_usdhc1_sleep: usdhc1sleepgrp {
+		fsl,pins = <
+			MX6QDL_PAD_SD1_CMD__SD1_CMD	0x3000
+			MX6QDL_PAD_SD1_CLK__SD1_CLK	0x3000
+			MX6QDL_PAD_SD1_DAT0__SD1_DATA0	0x3000
+			MX6QDL_PAD_SD1_DAT1__SD1_DATA1	0x3000
+			MX6QDL_PAD_SD1_DAT2__SD1_DATA2	0x3000
+			MX6QDL_PAD_SD1_DAT3__SD1_DATA3	0x3000
+		>;
+	};
+
 	pinctrl_usdhc3: usdhc3grp {
 		fsl,pins = <
 			MX6QDL_PAD_SD3_CMD__SD3_CMD	0x17059
-- 
2.20.1