Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7d22e1f6 authored by Narender Ankam's avatar Narender Ankam Committed by Gerrit - the friendly Code Review server
Browse files

msm: mdss: hdmi: limit max supported HDMI pclk frequency 



Read max-pclk-frequency-khz dt property and set max supported pclk
frequency to minimum of max-pclk-frequency-khz or max pclk frequency
as per hdmi controller's version.

Change-Id: I27815171886089a427c63f1722efc8f9b941497f
Signed-off-by: default avatarNarender Ankam <nankam@codeaurora.org>
parent 4bd759b6

Documentation/devicetree/bindings/fb/msm-hdmi-tx.txt

+1 −0
Original line number Diff line number Diff line
@@ -47,6 +47,7 @@ Optional properties: 
  HDMI interface will remain powered on from LK to kernel with continuous

  display of bootup logo.

- qcom,pluggable: boolean to enable hotplug feature.

- qcom,max-pclk-frequency-khz: maximum supported pclk frequency in KHz.

- qcom,display-id: A string indicates the display ID for the controller.

		   The possible values are:

		   - "primary"

drivers/video/fbdev/msm/mdss_hdmi_tx.c

+14 −0
Original line number Diff line number Diff line
@@ -192,6 +192,13 @@ static int hdmi_tx_get_version(struct hdmi_tx_ctrl *hdmi_ctrl) 
		break;

	}



	/*

	 * Override max pclk frequency as indicated in dt.

	 */

	if (hdmi_ctrl->pdata.max_pclk_freq_khz)

		hdmi_ctrl->max_pclk_khz = min(hdmi_ctrl->max_pclk_khz,

				hdmi_ctrl->pdata.max_pclk_freq_khz);



	rc = hdmi_tx_enable_power(hdmi_ctrl, HDMI_TX_HPD_PM, false);

	if (rc) {

		DEV_ERR("%s: FAILED to disable power\n", __func__);
@@ -4642,6 +4649,13 @@ static int hdmi_tx_get_dt_data(struct platform_device *pdev, 
	pdata->pluggable = of_property_read_bool(pdev->dev.of_node,

		"qcom,pluggable");



	rc = of_property_read_u32(pdev->dev.of_node,

		"qcom,max-pclk-frequency-khz", &pdata->max_pclk_freq_khz);

	if (rc) {

		pdata->max_pclk_freq_khz = 0;

		rc = 0;

	}



	data = of_get_property(pdev->dev.of_node, "qcom,display-id", &len);

	if (!data || len <= 0)

		pr_err("%s:%d Unable to read qcom,display-id, data=%pK,len=%d\n",

drivers/video/fbdev/msm/mdss_hdmi_tx.h

+1 −0
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ struct hdmi_tx_platform_data { 
	bool pluggable;

	struct clk *hdmi_pclk_rcg;

	struct clk *ext_hdmi_pixel_clk;

	u32 max_pclk_freq_khz;

};



struct hdmi_tx_pinctrl {