Hi Shimoda-san,
On Wed, Apr 11, 2018 at 11:37 AM, Yoshihiro Shimoda
<yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> Initial support for R-Car E3 (r8a77990), including core and module
> clocks.
>
> Based on the Table 8.2g of "R-Car Series, 3rd Generation User's Manual:
> Hardware ((Rev. 0.80, Oct 31, 2017) with Manual Errata on Feb. 28, 2018".
>
> Inspried by patches by Takeshi Kihara in the BSP.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Thanks for your patch!
> --- a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt
> +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt
> @@ -26,6 +26,7 @@ Required Properties:
> - "renesas,r8a77965-cpg-mssr" for the r8a77965 SoC (R-Car M3-N)
> - "renesas,r8a77970-cpg-mssr" for the r8a77970 SoC (R-Car V3M)
> - "renesas,r8a77980-cpg-mssr" for the r8a77980 SoC (R-Car V3H)
> + - "renesas,r8a77990-cpg-mssr" for the r8a77995 SoC (R-Car E3)
r8a77990 SoC
> - "renesas,r8a77995-cpg-mssr" for the r8a77995 SoC (R-Car D3)
> --- /dev/null
> +++ b/drivers/clk/renesas/r8a77990-cpg-mssr.c
> @@ -0,0 +1,291 @@
> +static const struct cpg_core_clk r8a77990_core_clks[] __initconst = {
> + /* Core Clock Outputs */
> + DEF_GEN3_PE("s0d6c", R8A77990_CLK_S0D6C, CLK_S0, 6, CLK_PE, 6),
... CLK_PE, 2),
> + DEF_GEN3_PE("s3d1c", R8A77990_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),
> + DEF_GEN3_PE("s3d2c", R8A77990_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2),
> + DEF_GEN3_PE("s3d4c", R8A77990_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4),
> +
> + DEF_DIV6P1("canfd", R8A77990_CLK_CANFD, CLK_PLL0D6, 0x244),
I cannot confirm the parent, as Section 8.2.18 ("CAN-FD Clock Frequency
Control Register (CANFDCKCR)") does not specify the source clock frequency
for R-Car E3 (unlike for D3). But 800 MHz sounds sane.
> + DEF_DIV6P1("csi0", R8A77990_CLK_CSI0, CLK_PLL1D2, 0x00c),
I cannot confirm the parent clock, as CSI0 is not documented.
But given PLL1 runs at 1.6 GHz, PLL1/2 is consistent with PLL1/4 on other
R-Car Gen3 SoCs with a faster PLL1 (3.2 GHz).
> +static const struct mssr_mod_clk r8a77990_mod_clks[] __initconst = {
> + DEF_MOD("vin7", 804, R8A77990_CLK_S1D2),
> + DEF_MOD("vin6", 805, R8A77990_CLK_S1D2),
Vin6/7 have been removed in the Feb. errata.
With the above fixed/confirmed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
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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