On Wed, Oct 5, 2016 at 10:52 PM, Sergei Shtylyov
<sergei.shtylyov@xxxxxxxxxxxxxxxxxx> wrote:
> Add the common R-Car Gen2 (and RZ/G) Clock Pulse Generator / Module Standby
> and Software Reset support code, using the CPG/MSSR driver core.
>
> Based on the proof-of-concept R8A7791 CPG/MSSR patch by Geert Uytterhoeven
> <geert+renesas@xxxxxxxxx>.
>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> --- /dev/null
> +++ renesas/drivers/clk/renesas/rcar-gen2-cpg.c
> +
> +/*
> + * Reset register definitions.
> + */
> +#define MODEMR 0xe6160060
> +
> +u32 __init rcar_gen2_read_modemr(void)
> +{
> + void __iomem *modemr = ioremap_nocache(MODEMR, 4);
> + u32 mode;
> +
> + BUG_ON(!modemr);
> + mode = ioread32(modemr);
> + iounmap(modemr);
> +
> + return mode;
> +}
Once we have "[PATCH v4 00/23] soc: renesas: Add R-Car RST driver for obtaining
mode pin state" in place, we can make the RST node in DT mandatory
for SoCs using CPG/MSSR, and drop this helper function.
> --- /dev/null
> +++ renesas/drivers/clk/renesas/rcar-gen2-cpg.h
> @@ -0,0 +1,42 @@
> +u32 rcar_gen2_read_modemr(void);
Likewise.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
