From: Maíra Canal <mcanal@igalia.com>
Date: Thu, 31 Jul 2025 21:06:19 +0000 (-0300)
Subject: clk: bcm: rpi: Maximize V3D clock
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6526402b9bac873d7a64c6e81eb53307d8471f08;p=users%2Fjedix%2Flinux-maple.git

clk: bcm: rpi: Maximize V3D clock

Although minimizing the clock rate is the best for most scenarios, as
stated in commit 4d85abb0fb8e ("clk: bcm: rpi: Enable minimize for all
firmware clocks"), when it comes to the GPU, it's ideal to have the
maximum rate allowed.

Add an option to maximize a firmware clock's rate when the clock is
enabled and set this option for V3D.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---

diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
index 70acfa68827d..1a9162f0ae31 100644
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -68,6 +68,7 @@ struct raspberrypi_clk_variant {
 	char		*clkdev;
 	unsigned long	min_rate;
 	bool		minimize;
+	bool		maximize;
 	u32		flags;
 };
 
@@ -135,7 +136,7 @@ raspberrypi_clk_variants[RPI_FIRMWARE_NUM_CLK_ID] = {
 	},
 	[RPI_FIRMWARE_V3D_CLK_ID] = {
 		.export = true,
-		.minimize = true,
+		.maximize = true,
 	},
 	[RPI_FIRMWARE_PIXEL_CLK_ID] = {
 		.export = true,
@@ -386,6 +387,9 @@ static struct clk_hw *raspberrypi_clk_register(struct raspberrypi_clk *rpi,
 		}
 	}
 
+	if (variant->maximize)
+		variant->min_rate = max_rate;
+
 	if (variant->min_rate) {
 		unsigned long rate;