clk: qcom: Add support for Video Clock Controller on QCS8300

The QCS8300 Video clock controller is a derivative of SA8775P, but has a
minor difference. Hence add support for QCS8300 Video clock controller by
extending the SA8775P VideoCC.

Reviewed-by: Dmitry Baryshkov <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Imran Shaik <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

Author: Imran Shaik

drivers/clk/qcom/videocc-sa8775p.c

@@ -523,6 +523,7 @@ static struct qcom_cc_desc video_cc_sa8775p_desc = {
 };
 
 static const struct of_device_id video_cc_sa8775p_match_table[] = {
+	{ .compatible = "qcom,qcs8300-videocc" },
 	{ .compatible = "qcom,sa8775p-videocc" },
 	{ }
 };
@@ -550,6 +551,13 @@ static int video_cc_sa8775p_probe(struct platform_device *pdev)
 	clk_lucid_evo_pll_configure(&video_pll0, regmap, &video_pll0_config);
 	clk_lucid_evo_pll_configure(&video_pll1, regmap, &video_pll1_config);
 
+	/*
+	 * Set mvs0c clock divider to div-3 to make the mvs0 and
+	 * mvs0c clocks to run at the same frequency on QCS8300
+	 */
+	if (of_device_is_compatible(pdev->dev.of_node, "qcom,qcs8300-videocc"))
+		regmap_write(regmap, video_cc_mvs0c_div2_div_clk_src.reg, 2);
+
 	/* Keep some clocks always enabled */
 	qcom_branch_set_clk_en(regmap, 0x80ec); /* VIDEO_CC_AHB_CLK */
 	qcom_branch_set_clk_en(regmap, 0x8144); /* VIDEO_CC_SLEEP_CLK */