[PATCH] rockchip: rk3328: Set VOP QoS to high priority

[Nicolas Frattaroli]

The default priority for the quality of service for the video
output results in unsightly glitches on the output whenever there
is memory pressure on the system, which happens a lot.

This sets the VOP QoS to high priority, which fixes this issue.

Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas at gmail.com>
---
 arch/arm/mach-rockchip/rk3328/rk3328.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/mach-rockchip/rk3328/rk3328.c b/arch/arm/mach-rockchip/rk3328/rk3328.c
index de17b88682..2373586b14 100644
--- a/arch/arm/mach-rockchip/rk3328/rk3328.c
+++ b/arch/arm/mach-rockchip/rk3328/rk3328.c
@@ -19,6 +19,8 @@ DECLARE_GLOBAL_DATA_PTR;
 #define GRF_BASE		0xFF100000
 #define UART2_BASE		0xFF130000
 #define FW_DDR_CON_REG		0xFF7C0040
+#define QOS_VOP_OFFSET		0xFF760080
+#define QOS_VOP_PRIORITY	0x8
 
 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
 	[BROM_BOOTSOURCE_EMMC] = "/mmc at ff520000",
@@ -54,6 +56,9 @@ int arch_cpu_init(void)
 
 	/* Disable the ddr secure region setting to make it non-secure */
 	rk_setreg(FW_DDR_CON_REG, 0x200);
+#else
+	printf("Setting VOP QoS\n");
+	rk_setreg(QOS_VOP_OFFSET + QOS_VOP_PRIORITY, 0x2);
 #endif
 	return 0;
 }
-- 
2.37.1