openwrt/target/linux/ipq806x/patches-5.15/121-v6.2-03-clk-qcom-krait-cc-also-enable-secondary-mux-and-div-.patch

From 18ae57b1e8abee6c453381470f6e18991d2901a8 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Wed, 9 Nov 2022 01:56:28 +0100
Subject: [PATCH 3/6] clk: qcom: krait-cc: also enable secondary mux and div
 clk

clk-krait ignore any rate change if clk is not flagged as enabled.
Correctly enable the secondary mux and div clk to correctly change rate
instead of silently ignoring the request.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221109005631.3189-2-ansuelsmth@gmail.com
---
 drivers/clk/qcom/krait-cc.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

--- a/drivers/clk/qcom/krait-cc.c
+++ b/drivers/clk/qcom/krait-cc.c
@@ -80,6 +80,7 @@ krait_add_div(struct device *dev, int id
 	};
 	const char *p_names[1];
 	struct clk *clk;
+	int cpu;
 
 	div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
 	if (!div)
@@ -103,6 +104,17 @@ krait_add_div(struct device *dev, int id
 	}
 
 	clk = devm_clk_register(dev, &div->hw);
+	if (IS_ERR(clk))
+		goto err;
+
+	/* clk-krait ignore any rate change if mux is not flagged as enabled */
+	if (id < 0)
+		for_each_online_cpu(cpu)
+			clk_prepare_enable(div->hw.clk);
+	else
+		clk_prepare_enable(div->hw.clk);
+
+err:
 	kfree(p_names[0]);
 	kfree(init.name);
 
@@ -113,7 +125,7 @@ static int
 krait_add_sec_mux(struct device *dev, int id, const char *s,
 		  unsigned int offset, bool unique_aux)
 {
-	int ret;
+	int cpu, ret;
 	struct krait_mux_clk *mux;
 	static const char *sec_mux_list[] = {
 		"qsb",
@@ -165,6 +177,13 @@ krait_add_sec_mux(struct device *dev, in
 	if (ret)
 		goto unique_aux;
 
+	/* clk-krait ignore any rate change if mux is not flagged as enabled */
+	if (id < 0)
+		for_each_online_cpu(cpu)
+			clk_prepare_enable(mux->hw.clk);
+	else
+		clk_prepare_enable(mux->hw.clk);
+
 unique_aux:
 	if (unique_aux)
 		kfree(sec_mux_list[0]);