From: Oliver Graute <oliver.graute@gmail.com>
To: aisheng.dong@nxp.com
Cc: devicetree@vger.kernel.org, peng.fan@nxp.com,
Anson.Huang@nxp.com, linux-imx@nxp.com, festevam@gmail.com,
linux-arm-kernel@lists.infradead.org
Subject: RFC: imx8: imx8qm with LCD Panel on lpspi
Date: Thu, 20 Feb 2020 17:04:41 +0100 [thread overview]
Message-ID: <20200220160441.GC31464@optiplex> (raw)
Hello Aisheng,
I try to get a LCD Panel working with the imx8qm. The Panel is connected
to lpspi. But I'am not sure if I handle the imx8qm clocking the right
way. Should I use the imx7ul compatible or the imx8qxp compatible? Which
clock defines should I use for the SPI1 Clk?
Best Regards,
Oliver
lpspi1: lpspi@5a010000 {
compatible = "fsl,imx7ulp-spi";
/* compatible = "fsl,imx8qxp-spi"; */
reg = <0x0 0x5a010000 0x0 0x10000>;
interrupts = <GIC_SPI 217 IRQ_TYPE_LEVEL_HIGH>;
interrupt-parent = <&gic>;
clocks = <&clk IMX_ADMA_SPI1_CLK>,
<&clk IMX_IMG_IPG_CLK>;
clock-names = "per", "ipg";
assigned-clocks = <&clk IMX_ADMA_SPI1_CLK>;
assigned-clock-rates = <20000000>;
status = "disabled";
};
&lpspi1 {
#address-cells = <1>;
#size-cells = <0>;
fsl,spi-num-chipselects = <1>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_lpspi1 &pinctrl_lpspi1_cs>;
cs-gpios = <&lsio_gpio3 24 GPIO_ACTIVE_LOW>;
status = "okay";
panel@0 {
compatible = "sitronix,st7789v";
reg = <0>;
/* reset-gpios = <&lsio_gpio3 11 GPIO_ACTIVE_LOW>; */
backlight = <&lvds_backlight1>;
spi-max-frequency = <30000000>;
spi-cpol;
spi-cpha;
port {
panel_input: endpoint {
remote-endpoint = <&tcon0_out_panel>;
};
};
};
};
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