From: Udit Kumar <u-kumar1@ti.com>
Date: Thu, 21 Sep 2023 17:00:38 +0000 (+0530)
Subject: clk: ti: clk-k3: Notify AVS driver upon setting clock rate
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=891180923ef9ac67b822718948310a4b5c33cd5b;p=u-boot.git

clk: ti: clk-k3: Notify AVS driver upon setting clock rate

AVS is enabled at R5 SPL stage, on few platforms like J721E
and J7200 clk-k3 is used instead if clk-sci driver.

Add support in clk-k3 driver as well to notify AVS driver
on setting clock rate so that voltage is changed accordingly.

Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Udit Kumar <u-kumar1@ti.com>
---

diff --git a/drivers/clk/ti/clk-k3.c b/drivers/clk/ti/clk-k3.c
index ba925fa3c4..10f7240f77 100644
--- a/drivers/clk/ti/clk-k3.c
+++ b/drivers/clk/ti/clk-k3.c
@@ -11,6 +11,7 @@
 #include <errno.h>
 #include <soc.h>
 #include <clk-uclass.h>
+#include <k3-avs.h>
 #include "k3-clk.h"
 
 #define PLL_MIN_FREQ	800000000
@@ -242,7 +243,11 @@ static ulong ti_clk_set_rate(struct clk *clk, ulong rate)
 	const struct clk_ops *ops;
 	ulong new_rate, rem;
 	ulong diff, new_diff;
+	int freq_scale_up = rate >= ti_clk_get_rate(clk) ? 1 : 0;
 
+	if (IS_ENABLED(CONFIG_K3_AVS0) && freq_scale_up)
+		k3_avs_notify_freq(data->map[clk->id].dev_id,
+				   data->map[clk->id].clk_id, rate);
 	/*
 	 * We must propagate rate change to parent if current clock type
 	 * does not allow setting it.
@@ -339,6 +344,10 @@ static ulong ti_clk_set_rate(struct clk *clk, ulong rate)
 		}
 	}
 
+	if (IS_ENABLED(CONFIG_K3_AVS0) && !freq_scale_up)
+		k3_avs_notify_freq(data->map[clk->id].dev_id,
+				   data->map[clk->id].clk_id, rate);
+
 	return new_rate;
 }