Thread (6 messages) 6 messages, 1 author, 2026-08-07

[PATCH 4/5] arm64: dts: imx8mq-phanbell: Mux the 32 kHz reference clock pad

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STALE74d SUPERSEDED

From: Rudi Heitbaum <hidden>
Date: 2026-08-07 13:32:30
Also in: imx, linux-devicetree, lkml
Subsystem: arm/freescale imx / mxc / layerscape arm architecture, the rest · Maintainers: Frank Li, Sascha Hauer, Linus Torvalds

Revision v1 of 2 in this series.

Revisions (2)
  1. v1 current
  2. v2 [diff vs current]
Mux GPIO1_IO00 as the ANAMIX 32.768 kHz reference input rather than leave
it in its GPIO reset function. Nothing claims the pad as a consumer, so it
goes in a hog group.

The vendor devicetree hogs ten further pins alongside it, none of which has
a consumer anywhere in the tree. Those only set pad configuration on pins
the kernel does not otherwise touch, so they are left out.

Signed-off-by: Rudi Heitbaum <redacted>
---
 arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts | 9 +++++++++
 1 file changed, 9 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts b/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts
index 58f7276eb557..2d134eefb765 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts
@@ -348,6 +348,9 @@ &wdog1 {
 };
 
 &iomuxc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hog>;
+
 	pinctrl_fec1: fec1grp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_ENET_MDC_ENET1_MDC			0x3
@@ -374,6 +377,12 @@ MX8MQ_IOMUXC_NAND_CLE_GPIO3_IO5			0x16
 		>;
 	};
 
+	pinctrl_hog: hoggrp {
+		fsl,pins = <
+			MX8MQ_IOMUXC_GPIO1_IO00_ANAMIX_REF_CLK_32K	0x05
+		>;
+	};
+
 	pinctrl_i2c1: i2c1grp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL			0x4000007f
-- 
2.53.0

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