linux-kernel - [PATCH 2/3] clk: samsung: gs101: register cmu

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Message-ID: <20231222165355.1462740-3-peter.griffin@linaro.org>
Date: Fri, 22 Dec 2023 16:53:54 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	daniel.lezcano@...aro.org,
	tglx@...utronix.de,
	conor+dt@...nel.org,
	alim.akhtar@...sung.com,
	s.nawrocki@...sung.com,
	tomasz.figa@...il.com,
	cw00.choi@...sung.com,
	mturquette@...libre.com,
	sboyd@...nel.org
Cc: devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	kernel-team@...roid.com,
	peter.griffin@...aro.org,
	tudor.ambarus@...aro.org,
	andre.draszik@...aro.org,
	semen.protsenko@...aro.org,
	saravanak@...gle.com,
	willmcvicker@...gle.com
Subject: [PATCH 2/3] clk: samsung: gs101: register cmu_misc clocks early

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@...aro.org>
---
 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