Thread (6 messages) 6 messages, 4 authors, 2022-01-26

Re: [PATCH 2/2] clk: qcom: Add MSM8226 Multimedia Clock Controller support

From: Luca Weiss <hidden>
Date: 2022-01-26 22:40:41
Also in: linux-arm-msm, linux-clk, lkml

Hi Bartosz,

are you planning to work on this? If not I can pick it up and make a v2.
Please let me know!

Regards
Luca

On Montag, 6. Dezember 2021 17:12:20 CET Bjorn Andersson wrote:
On Fri 12 Nov 19:58 CST 2021, Bartosz Dudziak wrote:
quoted
diff --git a/drivers/clk/qcom/mmcc-msm8974.c
b/drivers/clk/qcom/mmcc-msm8974.c
[..]
quoted
 static int mmcc_msm8974_probe(struct platform_device *pdev)
 {
 
 	struct regmap *regmap;

+	const struct of_device_id *match;
+
+	match = of_match_device(mmcc_msm8974_match_table, &pdev->dev);
Could you please use of_device_get_match_data() instead?
quoted
+	if (!match)
As a general suggestion; I don't see how we would end up here with
!match, but if we somehow do it would be during development and you
would have an easier time debugging this by hitting a NULL pointer
dereference with a callstack, than tracking down why your clocks are
missing...

Thanks,
Bjorn
quoted
+		return -ENODEV;

-	regmap = qcom_cc_map(pdev, &mmcc_msm8974_desc);
+	regmap = qcom_cc_map(pdev, match->data);

 	if (IS_ERR(regmap))
 	
 		return PTR_ERR(regmap);

-	clk_pll_configure_sr_hpm_lp(&mmpll1, regmap, &mmpll1_config, true);
-	clk_pll_configure_sr_hpm_lp(&mmpll3, regmap, &mmpll3_config, false);
+	if (match->data == &mmcc_msm8974_desc) {
+		clk_pll_configure_sr_hpm_lp(&mmpll1, regmap, 
&mmpll1_config, true);
quoted
+		clk_pll_configure_sr_hpm_lp(&mmpll3, regmap, 
&mmpll3_config, false);
quoted
+	} else {
+		msm8226_clock_override();
+	}

-	return qcom_cc_really_probe(pdev, &mmcc_msm8974_desc, regmap);
+	return qcom_cc_really_probe(pdev, match->data, regmap);

 }
 
 static struct platform_driver mmcc_msm8974_driver = {


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