Thread (17 messages) 17 messages, 4 authors, 2024-01-30

Re: [PATCH 2/3] clk: samsung: gs101: register cmu_misc clocks early

From: Sam Protsenko <semen.protsenko@linaro.org>
Date: 2023-12-22 16:59:24
Also in: linux-clk, linux-devicetree, linux-samsung-soc, lkml

On Fri, Dec 22, 2023 at 10:54 AM Peter Griffin [off-list ref] wrote:
Update cmu_misc so it is registered early, as it contains
the gate which clocks the Multi Core Timer (MCT). This clock
is required early in boot, otherwise exynos_mct will fail
obtaining the clock.

Note this wasn't previously an issue as exynos_mct wasn't
enabled.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
quoted hunk ↗ jump to hunk
 drivers/clk/samsung/clk-gs101.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/samsung/clk-gs101.c b/drivers/clk/samsung/clk-gs101.c
index 0964bb11657f..590119a25c18 100644
--- a/drivers/clk/samsung/clk-gs101.c
+++ b/drivers/clk/samsung/clk-gs101.c
@@ -2478,6 +2478,15 @@ static const struct samsung_cmu_info misc_cmu_info __initconst = {
        .clk_name               = "dout_cmu_misc_bus",
 };

+static void __init gs101_cmu_misc_init(struct device_node *np)
+{
+       exynos_arm64_register_cmu(NULL, np, &misc_cmu_info);
+}
+
+/* Register CMU_MISC early, as it's needed for MCT timer */
+CLK_OF_DECLARE(gs101_cmu_misc, "google,gs101-cmu-misc",
+              gs101_cmu_misc_init);
+
 /* ---- platform_driver ----------------------------------------------------- */

 static int __init gs101_cmu_probe(struct platform_device *pdev)
@@ -2495,9 +2504,6 @@ static const struct of_device_id gs101_cmu_of_match[] = {
        {
                .compatible = "google,gs101-cmu-apm",
                .data = &apm_cmu_info,
-       }, {
-               .compatible = "google,gs101-cmu-misc",
-               .data = &misc_cmu_info,
        }, {
        },
 };
--
2.43.0.472.g3155946c3a-goog
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