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Date: Fri, 26 Sep 2014 10:13:06 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>,
Simon Horman <horms@...ge.net.au>,
Magnus Damm <magnus.damm@...il.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Tomasz Figa <tomasz.figa@...il.com>,
Philipp Zabel <philipp.zabel@...il.com>,
Grygorii Strashko <grygorii.strashko@...com>,
Kevin Hilman <khilman@...aro.org>,
Linux-sh list <linux-sh@...r.kernel.org>,
Linux PM list <linux-pm@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 10/13] ARM: shmobile: r8a7740 dtsi: Add PM domain support
On Thu, Sep 25, 2014 at 6:28 PM, Geert Uytterhoeven
<geert+renesas@...der.be> wrote:
> Add a device node for the System Controller, with subnodes that
> represent the hardware power area hierarchy.
> Hook up all devices to their respective PM domains.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi
> index 502483f4dccb2f45..4fead480a405bebe 100644
> --- a/arch/arm/boot/dts/r8a7740.dtsi
> +++ b/arch/arm/boot/dts/r8a7740.dtsi
> @@ -383,6 +408,7 @@
> compatible = "renesas,r8a7740-cpg-clocks";
> reg = <0xe6150000 0x10000>;
> clocks = <&extal1_clk>, <&extalr_clk>;
> + power-domains = <&pd_c5>;
> #clock-cells = <1>;
> clock-output-names = "system", "pllc0", "pllc1",
> "pllc2", "r",
> @@ -397,6 +423,7 @@
> compatible = "renesas,r8a7740-div6-clock", "renesas,cpg-div6-clock";
> reg = <0xe6150080 4>;
> clocks = <&pllc1_div2_clk>;
> + power-domains = <&pd_c5>;
> #clock-cells = <0>;
> clock-output-names = "sub";
> };
> @@ -405,6 +432,7 @@
> pllc1_div2_clk: pllc1_div2_clk {
> compatible = "fixed-factor-clock";
> clocks = <&cpg_clocks R8A7740_CLK_PLLC1>;
> + power-domains = <&pd_c5>;
> #clock-cells = <0>;
> clock-div = <2>;
> clock-mult = <1>;
> @@ -413,6 +441,7 @@
> extal1_div2_clk: extal1_div2_clk {
> compatible = "fixed-factor-clock";
> clocks = <&extal1_clk>;
> + power-domains = <&pd_c5>;
> #clock-cells = <0>;
> clock-div = <2>;
> clock-mult = <1>;
> @@ -424,6 +453,7 @@
> compatible = "renesas,r8a7740-mstp-clocks", "renesas,cpg-mstp-clocks";
> reg = <0xe6150080 4>;
> clocks = <&sub_clk>, <&sub_clk>;
> + power-domains = <&pd_c5>;
> #clock-cells = <1>;
> renesas,clock-indices = <
> R8A7740_CLK_SUBCK R8A7740_CLK_SUBCK2
> @@ -439,6 +469,7 @@
> <&cpg_clocks R8A7740_CLK_B>,
> <&sub_clk>, <&sub_clk>,
> <&cpg_clocks R8A7740_CLK_B>;
> + power-domains = <&pd_c5>;
> #clock-cells = <1>;
> renesas,clock-indices = <
> R8A7740_CLK_CEU21 R8A7740_CLK_CEU20 R8A7740_CLK_TMU0
> @@ -460,6 +491,7 @@
> <&sub_clk>, <&sub_clk>, <&sub_clk>,
> <&sub_clk>, <&sub_clk>, <&sub_clk>,
> <&sub_clk>;
> + power-domains = <&pd_c5>;
> #clock-cells = <1>;
> renesas,clock-indices = <
> R8A7740_CLK_SCIFA6 R8A7740_CLK_INTCA
> @@ -489,6 +521,7 @@
> <&cpg_clocks R8A7740_CLK_HP>,
> <&cpg_clocks R8A7740_CLK_HP>,
> <&cpg_clocks R8A7740_CLK_HP>;
> + power-domains = <&pd_c5>;
> #clock-cells = <1>;
> renesas,clock-indices = <
> R8A7740_CLK_CMT1 R8A7740_CLK_FSI R8A7740_CLK_IIC1
> @@ -506,6 +539,7 @@
> <&cpg_clocks R8A7740_CLK_HP>,
> <&cpg_clocks R8A7740_CLK_HP>,
> <&cpg_clocks R8A7740_CLK_HP>;
> + power-domains = <&pd_c5>;
> #clock-cells = <1>;
> renesas,clock-indices = <
> R8A7740_CLK_USBH R8A7740_CLK_SDHI2
Woosh, looks like I've been too eager adding links to the pd_c5 "always on"
PM domain to any node that has a clocks property. This must not be done for
the clocks. They are not instantiated as platform devices.
Thanks to Grygorii for questioning me.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-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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