diff options
Diffstat (limited to 'arch/arm/mach-imx/mach-imx51.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx51.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/mach-imx51.c b/arch/arm/mach-imx/mach-imx51.c index 3835b6a3423c..9d5895ea64f1 100644 --- a/arch/arm/mach-imx/mach-imx51.c +++ b/arch/arm/mach-imx/mach-imx51.c @@ -12,6 +12,7 @@ #include <linux/io.h> #include <linux/irq.h> +#include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <asm/mach/arch.h> @@ -48,11 +49,37 @@ static void __init imx51_ipu_mipi_setup(void) iounmap(hsc_addr); } +static void __init imx51_m4if_setup(void) +{ + void __iomem *m4if_base; + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx51-m4if"); + if (!np) + return; + + m4if_base = of_iomap(np, 0); + if (!m4if_base) { + pr_err("Unable to map M4IF registers\n"); + return; + } + + /* + * Configure VPU and IPU with higher priorities + * in order to avoid artifacts during video playback + */ + writel_relaxed(0x00000203, m4if_base + 0x40); + writel_relaxed(0x00000000, m4if_base + 0x44); + writel_relaxed(0x00120125, m4if_base + 0x9c); + writel_relaxed(0x001901A3, m4if_base + 0x48); + iounmap(m4if_base); +} + static void __init imx51_dt_init(void) { imx51_ipu_mipi_setup(); imx_src_init(); - + imx51_m4if_setup(); imx_aips_allow_unprivileged_access("fsl,imx51-aipstz"); } |