From e5467359a725de90b6b8d0dd865500f6373828ca Mon Sep 17 00:00:00 2001
From: Brian Norris <briannorris@chromium.org>
Date: Mon, 22 Aug 2022 16:45:04 -0700
Subject: [PATCH] arm64: dts: rockchip: Pull up wlan wake# on Gru-Bob
Git-commit: e5467359a725de90b6b8d0dd865500f6373828ca
Patch-mainline: v6.0-rc7
References: git-fixes
The Gru-Bob board does not have a pull-up resistor on its
WLAN_HOST_WAKE# pin, but Kevin does. The production/vendor kernel
specified the pin configuration correctly as a pull-up, but this didn't
get ported correctly to upstream.
This means Bob's WLAN_HOST_WAKE# pin is floating, causing inconsistent
wakeup behavior.
Note that bt_host_wake_l has a similar dynamic, but apparently the
upstream choice was to redundantly configure both internal and external
pull-up on Kevin (see the "Kevin has an external pull up" comment in
rk3399-gru.dtsi). This doesn't cause any functional problem, although
it's perhaps wasteful.
Fixes: 8559bbeeb849 ("arm64: dts: rockchip: add Google Bob")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20220822164453.1.I75c57b48b0873766ec993bdfb7bc1e63da5a1637@changeid
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts | 5 +++++
arch/arm64/boot/dts/rockchip/rk3399-gru-chromebook.dtsi | 1 +
2 files changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts
index 31ebb4e5fd33..0f9cc042d9bf 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts
@@ -88,3 +88,8 @@ h1_int_od_l: h1-int-od-l {
};
};
};
+
+&wlan_host_wake_l {
+ /* Kevin has an external pull up, but Bob does not. */
+ rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_up>;
+};
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-chromebook.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru-chromebook.dtsi
index cd074641884b..45796b9fd94f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru-chromebook.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-chromebook.dtsi
@@ -578,6 +578,7 @@ wifi_perst_l: wifi-perst-l {
};
wlan_host_wake_l: wlan-host-wake-l {
+ /* Kevin has an external pull up, but Bob does not */
rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
--
2.35.3