drivers: drm: dw-hdmi-qp: Add ddc-i2c-rxfilter DT prop

Joshua-Riek · Jun 29, 2024 · a018017 · a018017
1 parent 488ef3c
commit a018017
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -1001,9 +1001,15 @@ static const struct hdmi_quirk *get_hdmi_quirk(u8 *vendor_id)
 
 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 */