linux-kernel - [PATCH 3/9] soc: rockchip: grf: Add select correct PWM implementation on RK3368

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Message-ID: <20251020082508.3636511-4-heiko@sntech.de>
Date: Mon, 20 Oct 2025 10:25:02 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: heiko@...ech.de
Cc: maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	quentin.schulz@...rry.de,
	andy.yan@...k-chips.com,
	dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	cn.liweihao@...il.com,
	Heiko Stuebner <heiko.stuebner@...rry.de>
Subject: [PATCH 3/9] soc: rockchip: grf: Add select correct PWM implementation on RK3368

From: Heiko Stuebner <heiko.stuebner@...rry.de>

Similar to the RK3288, the RK3368 has two different implementations of
the PWM block inside the soc - the newer one that we have a driver for
and that is used on every soc and a previous variant that was likely
left as a fallback if the new one creates problems.

The devicetree already is set up for the new variant, so make sure
we actually use it - similar to the RK3288.

Signed-off-by: Heiko Stuebner <heiko.stuebner@...rry.de>
---
 drivers/soc/rockchip/grf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/rockchip/grf.c b/drivers/soc/rockchip/grf.c
index 344870da7675..963cdea01ce7 100644
--- a/drivers/soc/rockchip/grf.c
+++ b/drivers/soc/rockchip/grf.c
@@ -91,6 +91,7 @@ static const struct rockchip_grf_info rk3328_grf __initconst = {
 
 static const struct rockchip_grf_value rk3368_defaults[] __initconst = {
 	{ "jtag switching", RK3368_GRF_SOC_CON15, FIELD_PREP_WM16_CONST(BIT(13), 0) },
+	{ "pwm select", RK3368_GRF_SOC_CON15, FIELD_PREP_WM16_CONST(BIT(12), 1) },
 };
 
 static const struct rockchip_grf_info rk3368_grf __initconst = {
-- 
2.47.2