From 5c0ddb4e715d89e4ea94821cd85bcac220bd7ea4 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 27 Jan 2023 09:39:10 +0000 Subject: [PATCH] arm64: tegra: Add vccmq on Jetson TX2 The TX2 SoM's SDIO WiFI card is connected via mmc@3440000 however it does not look like the upstream kernel is even bothering to power this (and the regulator framework shuts down this power rail post kernel init). The issue seems to be a missing link for vccq from the MAX77620 PMIC's LDO5 which is labeled vddio_sdmmc3 (and not used anywhere else) to the mmc@3440000 node to ensure there is at leasr bus power. Note this does not fix the WiFi issue on upstream kernels, there is still something else missing that gets the BCM WiFi device to detect properly. Signed-off-by: Ben Dooks Signed-off-by: Thierry Reding --- arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi index a4264ea417285..e2d6857a37097 100644 --- a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi @@ -145,6 +145,7 @@ /* SDMMC3 (SDIO) */ mmc@3440000 { status = "okay"; + vqmmc-supply = <&vddio_sdmmc3>; }; /* SDMMC4 (eMMC) */ -- 2.30.2