From c077d9d717dc481a6a95f9ef2562ef6bda74fbdf Mon Sep 17 00:00:00 2001
From: Douglas Anderson <dianders@chromium.org>
Date: Thu, 2 May 2019 15:53:35 -0700
Subject: [PATCH 46/54] ARM: dts: rockchip: Add unwedge pinctrl entries for
dw_hdmi on rk3288
This adds the "unwedge" pinctrl entries introduced by a recent dw_hdmi
change that can unwedge the dw_hdmi i2c bus in some cases. It's
expected that any boards using this would add:
pinctrl-names = "default", "unwedge";
pinctrl-0 = <&hdmi_ddc>;
pinctrl-1 = <&hdmi_ddc_unwedge>;
Note that this isn't added by default because some boards may choose
to mux i2c5 for their DDC bus (if that is more tested for them).
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
arch/arm/boot/dts/rk3288.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 766d1cf51a5b..cc893e154fe5 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -1547,6 +1547,15 @@
rockchip,pins = <7 RK_PC3 2 &pcfg_pull_none>,
<7 RK_PC4 2 &pcfg_pull_none>;
};
+
+ hdmi_ddc_unwedge: hdmi-ddc-unwedge {
+ rockchip,pins = <7 RK_PC3 RK_FUNC_GPIO &pcfg_output_low>,
+ <7 RK_PC4 2 &pcfg_pull_none>;
+ };
+ };
+
+ pcfg_output_low: pcfg-output-low {
+ output-low;
};
pcfg_pull_up: pcfg-pull-up {
--
2.11.0