Hi Kaneko-san, Mizuguchi-san,
On Sun, Feb 15, 2015 at 3:49 PM, Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx> wrote:
> From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx>
>
> HSUSB uses hp_clk for H/W register access.
That indeed seems to be true, and that's what this patch is changing.
> HSUSB uses mp_clk for USB-DMAC access.
However, page 64-2 doesn't mention the MP clock for USB-DMAC:
"AXI bus clock (ZSφ: 260 MHz), HPB bus clock (HPφ: 130 MHz).
USB local bus clock (48 MHz)"
So your statement doesn't seem to be true?
Note that mstp3_clks in dtsi has hp_clk as the parent for both usbdmac0 and
usbdmac1, so if your statement would be true, that has to changed, too?
The same is true for other members of the R-Car Gen2 family, e.g. your patch
for r8a7791.
> The clock is defined for H/W register access.
>
> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx>
> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
> ---
>
> This patch is based on devel branch of Simon Horman's renesas tree.
>
> arch/arm/boot/dts/r8a7790.dtsi | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
> index 24de994..113edf2 100644
> --- a/arch/arm/boot/dts/r8a7790.dtsi
> +++ b/arch/arm/boot/dts/r8a7790.dtsi
> @@ -1132,7 +1133,7 @@
> mstp7_clks: mstp7_clks@e615014c {
> compatible = "renesas,r8a7790-mstp-clocks", "renesas,cpg-mstp-clocks";
> reg = <0 0xe615014c 0 4>, <0 0xe61501c4 0 4>;
> - clocks = <&mp_clk>, <&mp_clk>, <&zs_clk>, <&zs_clk>, <&p_clk>,
> + clocks = <&mp_clk>, <&hp_clk>, <&zs_clk>, <&zs_clk>, <&p_clk>,
> <&p_clk>, <&zx_clk>, <&zx_clk>, <&zx_clk>, <&zx_clk>,
> <&zx_clk>;
> #clock-cells = <1>;
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
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