soc: rockchip: grf: Set RK3128's vpu main clock

RK3128 has a setting in GRF which selects whether the vpu attached iommu
uses the AXI clock of the decoder (vdpu) or the encoder (vepu). The
default is vepu but some part of the vendor firmware sets it to vdpu.

In order to be independent on whether any of those vendor firmware blobs is
used to boot the SoC reset "vpu main clock" setting to it's default value.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20240523185633.71355-3-knaerzche@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: knaerzche

drivers/soc/rockchip/grf.c

@@ -41,9 +41,11 @@ static const struct rockchip_grf_info rk3036_grf __initconst = {
 };
 
 #define RK3128_GRF_SOC_CON0		0x140
+#define RK3128_GRF_SOC_CON1		0x144
 
 static const struct rockchip_grf_value rk3128_defaults[] __initconst = {
 	{ "jtag switching", RK3128_GRF_SOC_CON0, HIWORD_UPDATE(0, 1, 8) },
+	{ "vpu main clock", RK3128_GRF_SOC_CON1, HIWORD_UPDATE(0, 1, 10) },
 };
 
 static const struct rockchip_grf_info rk3128_grf __initconst = {