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From: Douglas Anderson <dianders@chromium.org>
To: Heiko Stuebner <heiko@sntech.de>,
	Sandy Huang <hjc@rock-chips.com>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Rob Herring <robh+dt@kernel.org>
Cc: linux-rockchip@lists.infradead.org,
	Neil Armstrong <narmstrong@baylibre.com>,
	Mark Rutland <mark.rutland@arm.com>,
	mka@chromium.org, Sean Paul <seanpaul@chromium.org>,
	Douglas Anderson <dianders@chromium.org>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/5] ARM: dts: rockchip: Add unwedge pinctrl entries for dw_hdmi on rk3288
Date: Thu,  2 May 2019 15:53:35 -0700	[thread overview]
Message-ID: <20190502225336.206885-4-dianders@chromium.org> (raw)
In-Reply-To: <20190502225336.206885-1-dianders@chromium.org>

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>
---

 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 74c9517c4f92..eebc04fa1e4d 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -1545,6 +1545,15 @@
 				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 {
-- 
2.21.0.1020.gf2820cf01a-goog


WARNING: multiple messages have this Message-ID (diff)
From: Douglas Anderson <dianders@chromium.org>
To: Heiko Stuebner <heiko@sntech.de>,
	Sandy Huang <hjc@rock-chips.com>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
	devicetree@vger.kernel.org,
	Neil Armstrong <narmstrong@baylibre.com>,
	Douglas Anderson <dianders@chromium.org>,
	linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
	mka@chromium.org, Sean Paul <seanpaul@chromium.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/5] ARM: dts: rockchip: Add unwedge pinctrl entries for dw_hdmi on rk3288
Date: Thu,  2 May 2019 15:53:35 -0700	[thread overview]
Message-ID: <20190502225336.206885-4-dianders@chromium.org> (raw)
In-Reply-To: <20190502225336.206885-1-dianders@chromium.org>

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>
---

 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 74c9517c4f92..eebc04fa1e4d 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -1545,6 +1545,15 @@
 				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 {
-- 
2.21.0.1020.gf2820cf01a-goog


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  parent reply	other threads:[~2019-05-02 22:54 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-02 22:53 [PATCH 1/5] dt-bindings: drm/bridge/synopsys: dw-hdmi: Add "unwedge" for ddc bus Douglas Anderson
2019-05-02 22:53 ` Douglas Anderson
2019-05-02 22:53 ` [PATCH 2/5] " Douglas Anderson
2019-05-02 22:53   ` Douglas Anderson
2019-05-15 18:20   ` Sean Paul
2019-05-15 18:20     ` Sean Paul
2019-05-15 18:36     ` Doug Anderson
2019-05-15 18:42       ` Sean Paul
2019-05-02 22:53 ` [PATCH 3/5] ARM: dts: rockchip: Switch to builtin HDMI DDC bus on rk3288-veyron Douglas Anderson
2019-05-02 22:53   ` Douglas Anderson
2019-05-15 18:25   ` Sean Paul
2019-05-15 18:25     ` Sean Paul
2019-06-06 10:28   ` Heiko Stuebner
2019-06-06 10:28     ` Heiko Stuebner
2019-05-02 22:53 ` Douglas Anderson [this message]
2019-05-02 22:53   ` [PATCH 4/5] ARM: dts: rockchip: Add unwedge pinctrl entries for dw_hdmi on rk3288 Douglas Anderson
2019-05-15 18:25   ` Sean Paul
2019-05-15 18:25     ` Sean Paul
2019-05-02 22:53 ` [PATCH 5/5] ARM: dts: rockchip: Add HDMI i2c unwedging for rk3288-veyron Douglas Anderson
2019-05-02 22:53   ` Douglas Anderson
2019-05-15 18:26   ` Sean Paul
2019-05-15 18:26     ` Sean Paul
2019-05-14 20:49 ` [PATCH 1/5] dt-bindings: drm/bridge/synopsys: dw-hdmi: Add "unwedge" for ddc bus Rob Herring
2019-05-14 20:49   ` Rob Herring
2019-05-14 20:49   ` Rob Herring
2019-06-05 20:21 ` Sean Paul
2019-06-05 20:21   ` Sean Paul

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