ENGR00306443-1 mx6sx:Update the gc400t QoS

Per SoC team recommandation, update the gc400t QoS value to write 2
and Read 8. It can improve gpu performance in most case.

3d fill: 165->172Mpixel/s
2d fill: 190->228Mpixel/s

Signed-off-by: Loren HUANG <b02279@freescale.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c
index 8b61e1afde3a..96c79a0bb4f5 100644
--- a/arch/arm/mach-imx/mach-imx6sx.c
+++ b/arch/arm/mach-imx/mach-imx6sx.c
@@ -153,6 +153,24 @@ static const struct of_dev_auxdata imx6sx_auxdata_lookup[] __initconst = {
         { /* sentinel */ }
 };
 
+static inline void imx6sx_qos_init(void)
+{
+        struct device_node *np;
+        void __iomem *src_base;
+
+        np = of_find_compatible_node(NULL, NULL, "fsl,imx6sx-qosc");
+        if (!np)
+                return;
+        src_base = of_iomap(np, 0);
+        WARN_ON(!src_base);
+        writel_relaxed(0, src_base); /* Disable clkgate & soft_rst */
+        writel_relaxed(0, src_base+0x60); /* Enable all masters */
+        writel_relaxed(0, src_base+0x1400); /* Disable clkgate & soft_rst for gpu */
+        writel_relaxed(0x0f000222, src_base+0x1400+0xd0); /* Set Write QoS 2 for gpu */
+        writel_relaxed(0x0f000822, src_base+0x1400+0xe0); /* Set Read QoS 8 for gpu */
+        return;
+}
+
 static void __init imx6sx_init_machine(void)
 {
         struct device *parent;
@@ -169,6 +187,7 @@ static void __init imx6sx_init_machine(void)
         imx6sx_enet_init();
         imx_anatop_init();
         imx6_pm_init();
+        imx6sx_qos_init();
 }
 
 static void __init imx6sx_init_late(void)