| Message ID | 1530720842-28281-2-git-send-email-festevam@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
On Wed, Jul 4, 2018 at 7:14 PM, Fabio Estevam <festevam@gmail.com> wrote: > From: Fabio Estevam <fabio.estevam@nxp.com> > > Configure the M4IF registers as per the vendor bootloader > to avoid visual artifacts during video playback. > > This way we don't need to rely on the bootloader configuration for > optimal IPU/VPU bus priorities. > > Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Tested-by: Sergey Lapin <sergey.lapin@cogentembedded.com>
Am Mittwoch, den 04.07.2018, 13:14 -0300 schrieb Fabio Estevam: > From: Fabio Estevam <fabio.estevam@nxp.com> > > Configure the M4IF registers as per the vendor bootloader > to avoid visual artifacts during video playback. > > This way we don't need to rely on the bootloader configuration for > optimal IPU/VPU bus priorities. > > Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> > --- > arch/arm/mach-imx/mach-imx51.c | 29 ++++++++++++++++++++++++++++- > 1 file changed, 28 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/mach-imx/mach-imx51.c b/arch/arm/mach-imx/mach- > imx51.c > index 3835b6a..37ffdfa 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"); > } >
diff --git a/arch/arm/mach-imx/mach-imx51.c b/arch/arm/mach-imx/mach-imx51.c index 3835b6a..37ffdfa 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"); }