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arm64: dts: turing-rk1: Fix reading EDID information #133

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merged 2 commits into from
Dec 25, 2023
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Merged

arm64: dts: turing-rk1: Fix reading EDID information #133

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2ed8d34
drivers: drm: dw-hdmi-qp: Add ddc-i2c-rxfilter DT prop
Joshua-Riek Dec 21, 2023
e823d9b
arm64: dts: turing-rk1: Enable ddc-i2c-rxfilter
Joshua-Riek Dec 21, 2023
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1 change: 1 addition & 0 deletions arch/arm64/boot/dts/rockchip/rk3588-turing-rk1.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -594,6 +594,7 @@

&hdmi0 {
status = "okay";
ddc-i2c-rxfilter = <0x10>;
};

&hdmi0_in_vp0 {
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6 changes: 6 additions & 0 deletions drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
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Expand Up @@ -963,9 +963,15 @@ static int hdmi_bus_fmt_color_depth(unsigned int bus_format)

static void dw_hdmi_i2c_init(struct dw_hdmi_qp *hdmi)
{
u32 ddc_i2c_rxfilter;

/* Software reset */
hdmi_writel(hdmi, 0x01, I2CM_CONTROL0);

/* Configure I2CM hold time and rxfilter */
if (device_property_read_u32(hdmi->dev, "ddc-i2c-rxfilter", &ddc_i2c_rxfilter))
hdmi_writel(hdmi, ddc_i2c_rxfilter, I2CM_CONFIG0);

hdmi_modb(hdmi, 0, I2CM_FM_EN, I2CM_INTERFACE_CONTROL0);

/* Clear DONE and ERROR interrupts */
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