diff options
| author | Sammy He <r62914@freescale.com> | 2011-10-22 00:45:25 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-01-09 21:02:08 +0800 |
| commit | 3035f11504b3e2eb2d285a056cf65e4e54abcd3e (patch) | |
| tree | 81e7138933a3964c21a4c0fff3450ea4f5a2fc52 /arch/arm/plat-mxc/devices | |
| parent | 8faa726144d48b57985577d8e5acd176149959c7 (diff) | |
ENGR00160547 vpu: Add vpu_reset function in arch/arm for i.mx6q
Add vpu hardware reset function for i.mx6q platform.
Signed-off-by: Sammy He <r62914@freescale.com>
Diffstat (limited to 'arch/arm/plat-mxc/devices')
| -rwxr-xr-x | arch/arm/plat-mxc/devices/platform-imx_vpu.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/arm/plat-mxc/devices/platform-imx_vpu.c b/arch/arm/plat-mxc/devices/platform-imx_vpu.c index b4edb91c12ed..ed30bc7882b8 100755 --- a/arch/arm/plat-mxc/devices/platform-imx_vpu.c +++ b/arch/arm/plat-mxc/devices/platform-imx_vpu.c @@ -110,9 +110,30 @@ const struct imx_vpu_data imx53_vpu_data __initconst = #endif #ifdef CONFIG_SOC_IMX6Q +void mx6q_vpu_reset(void) +{ + u32 reg; + void __iomem *src_base; + + src_base = ioremap(SRC_BASE_ADDR, PAGE_SIZE); + + /* mask interrupt due to vpu passed reset */ + reg = __raw_readl(src_base + 0x18); + reg |= 0x02; + __raw_writel(reg, src_base + 0x18); + + reg = __raw_readl(src_base); + reg |= 0x5; /* warm reset vpu */ + __raw_writel(reg, src_base); + while (__raw_readl(src_base) & 0x04) + ; + + iounmap(src_base); +} + const struct imx_vpu_data imx6q_vpu_data __initconst = imx6_vpu_data_entry_single(MX6Q, - true, 0x21000, NULL, NULL); + true, 0x21000, mx6q_vpu_reset, NULL); #endif struct platform_device *__init imx_add_vpu( |