Re: [PATCH v3 5/7] ARM: dts: imx: Add support for Advantech/GE B450v3

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On 11/16/2015 06:19 AM, Lucas Stach wrote:
Am Dienstag, den 10.11.2015, 13:00 -0500 schrieb Akshay Bhat:
Add support for Advantech/GE B450v3 board.

Signed-off-by: Akshay Bhat <akshay.bhat@xxxxxxxxxxx>
---
  arch/arm/boot/dts/Makefile         |  1 +
  arch/arm/boot/dts/imx6q-b450v3.dts | 75 ++++++++++++++++++++++++++++++++++++++
  2 files changed, 76 insertions(+)
  create mode 100644 arch/arm/boot/dts/imx6q-b450v3.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 30bbc37..b3330fe 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -310,6 +310,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
  	imx6dl-wandboard-revb1.dtb \
  	imx6q-apf6dev.dtb \
  	imx6q-arm2.dtb \
+	imx6q-b450v3.dtb \
  	imx6q-cm-fx6.dtb \
  	imx6q-cubox-i.dtb \
  	imx6q-dfi-fs700-m60.dtb \
diff --git a/arch/arm/boot/dts/imx6q-b450v3.dts b/arch/arm/boot/dts/imx6q-b450v3.dts
new file mode 100644
index 0000000..919e4a4
--- /dev/null
+++ b/arch/arm/boot/dts/imx6q-b450v3.dts
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2015 Timesys Corporation.
+ * Copyright 2015 General Electric Company
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+
+#include "imx6q-bx50v3.dtsi"
+
+/ {
+	model = "Advantech MX6Q B450V3 QSeven Board";
+	compatible = "ge,imx6q-b450v3", "advantech,imx6q-ba16", "fsl,imx6q";
+
+	chosen {
+		stdout-path = &uart3;
+	};
+};
+
+&ldb {
+	assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
+			  <&clks IMX6QDL_CLK_LDB_DI1_SEL>;
+	assigned-clock-parents = <&clks IMX6QDL_CLK_PLL3_USB_OTG>,
+				 <&clks IMX6QDL_CLK_PLL3_USB_OTG>;
+	status = "okay";
+
+	lvds0: lvds-channel@0 {
+		fsl,data-mapping = "spwg";
+		fsl,data-width = <24>;
+		status = "okay";
+
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: G121X1-L03 {
+				clock-frequency = <65000000>;
+				hactive = <1024>;
+				vactive = <768>;
+				hback-porch = <320>;
+				hfront-porch = <0>;
+				vback-porch = <0>;
+				vfront-porch = <38>;
+				hsync-len = <1>;
+				vsync-len = <1>;
+			};
+		};

Display timings in DT are deprecated and new boards should add the
display with a specific compatible to the simple-panel driver and then
link a panel node to the LVDS channels. Take a look at the i.MX6
Nitrogen DTs for an example on how to do this.

Same comment applies to the next patches as well.

Thanks for the example Lucas. Added G121X1-L03 panel which is now in linux-next (https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/panel?h=next-20151127&id=f8fa17ba812b7df1535f6bb75d7264670f5997a6)

v4 patch now uses simple-panel:
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-December/390373.html


+	};
+
+	lvds1: lvds-channel@1 {
+		fsl,data-mapping = "spwg";
+		fsl,data-width = <24>;
+		status = "okay";
+
+		display-timings {
+			native-mode = <&timing1>;
+			timing1: G121X1-L03 {
+				clock-frequency = <65000000>;
+				hactive = <1024>;
+				vactive = <768>;
+				hback-porch = <320>;
+				hfront-porch = <0>;
+				vback-porch = <0>;
+				vfront-porch = <38>;
+				hsync-len = <1>;
+				vsync-len = <1>;
+			};
+		};
+	};
+
+};

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