Thread (28 messages) 28 messages, 4 authors, 2021-06-09

Re: [PATCH v2 11/12] arm64: dts: renesas: Add initial DTSI for RZ/G2{L,LC} SoC's

From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2021-06-09 07:01:54
Also in: linux-clk, linux-devicetree, linux-renesas-soc, linux-serial, lkml

Hi Biju,

On Fri, Jun 4, 2021 at 3:55 PM Biju Das [off-list ref] wrote:
quoted
Subject: [PATCH v2 11/12] arm64: dts: renesas: Add initial DTSI for
RZ/G2{L,LC} SoC's

Add initial DTSI for RZ/G2{L,LC} SoC's.

File structure:
r9a07g044.dtsi  => RZ/G2L family SoC common parts r9a07g044l1.dtsi =>
Specific to RZ/G2L (R9A07G044L single cortex A55) SoC

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
quoted
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
quoted
+             cpg: clock-controller@11010000 {
+                     compatible = "renesas,r9a07g044-cpg";
+                     reg = <0 0x11010000 0 0x10000>;
What about WDTOVF_RST(0xB10) and WDTRST_SEL(0xB14) registers, this registers to be handled by WDT driver.
Unfortunately it is in CPG block.

So do we need to map the entire CPG registers or up to 0xB00?

Geert, Prabhakar: Any thoughts?
As the registers are part of the CPG block, I think they should be
covered by the CPG node.  You can handle them in the CPG driver, through
functions called from the WDT driver (cfr. rcar_rst_read_mode_pins()).

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

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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