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Message-ID: <20160729201625.GA4308@rob-hp-laptop>
Date: Fri, 29 Jul 2016 15:16:25 -0500
From: Rob Herring <robh@...nel.org>
To: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: linux-kernel@...r.kernel.org,
Philipp Zabel <p.zabel@...gutronix.de>,
devicetree@...r.kernel.org, Mark Rutland <mark.rutland@....com>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] reset: uniphier: add reset controller drivers for
UniPhier SoCs
On Wed, Jul 27, 2016 at 03:20:08AM +0900, Masahiro Yamada wrote:
> This is the initial commit for UniPhier reset controller drivers.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
>
> Changes in v2 (mostly suggested by Philipp Zabel):
> - Unify multiple module_platform_driver() boilerplates into one
> - Unify tiny driver code and decrease the number of files
> - Invert the logic of .deassert_val, changing it into .assert_val
> - Show error code when failed to get regmap
> - Add a binding document
> - Support more reset signals
>
> .../devicetree/bindings/reset/uniphier-reset.txt | 99 ++++++++
> MAINTAINERS | 1 +
> drivers/reset/Kconfig | 1 +
> drivers/reset/Makefile | 1 +
> drivers/reset/uniphier/Kconfig | 9 +
> drivers/reset/uniphier/Makefile | 5 +
> drivers/reset/uniphier/reset-uniphier-core.c | 270 +++++++++++++++++++++
> drivers/reset/uniphier/reset-uniphier-mio.c | 55 +++++
> drivers/reset/uniphier/reset-uniphier-peri.c | 55 +++++
> drivers/reset/uniphier/reset-uniphier-sys.c | 77 ++++++
> drivers/reset/uniphier/reset-uniphier.h | 57 +++++
> 11 files changed, 630 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/reset/uniphier-reset.txt
> create mode 100644 drivers/reset/uniphier/Kconfig
> create mode 100644 drivers/reset/uniphier/Makefile
> create mode 100644 drivers/reset/uniphier/reset-uniphier-core.c
> create mode 100644 drivers/reset/uniphier/reset-uniphier-mio.c
> create mode 100644 drivers/reset/uniphier/reset-uniphier-peri.c
> create mode 100644 drivers/reset/uniphier/reset-uniphier-sys.c
> create mode 100644 drivers/reset/uniphier/reset-uniphier.h
>
> diff --git a/Documentation/devicetree/bindings/reset/uniphier-reset.txt b/Documentation/devicetree/bindings/reset/uniphier-reset.txt
> new file mode 100644
> index 0000000..c2fb0d0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reset/uniphier-reset.txt
> @@ -0,0 +1,99 @@
> +UniPhier reset controller
> +
> +
> +System reset
> +------------
> +
> +Required properties:
> +- compatible: should be one of the following:
> + "socionext,uniphier-sld3-reset" - for PH1-sLD3 SoC.
> + "socionext,uniphier-ld4-reset" - for PH1-LD4 SoC.
> + "socionext,uniphier-pro4-reset" - for PH1-Pro4 SoC.
> + "socionext,uniphier-sld8-reset" - for PH1-sLD8 SoC.
> + "socionext,uniphier-pro5-reset" - for PH1-Pro5 SoC.
> + "socionext,uniphier-pxs2-reset" - for ProXstream2/PH1-LD6b SoC.
> + "socionext,uniphier-ld11-reset" - for PH1-LD11 SoC.
> + "socionext,uniphier-ld20-reset" - for PH1-LD20 SoC.
> +- #reset-cells: should be 1.
> +
> +Note:
> +The reset node should be a child of a syscon node.
> +
> +Example:
> +
> + sysctrl@...40000 {
> + compatible = "simple-mfd", "syscon";
This needs a specific compatible string.
> + reg = <0x61840000 0x4000>;
> +
> + reset {
> + compatible = "socionext,uniphier-ld20-reset";
> + #reset-cells = <1>;
> + };
> +
> + other nodes ...
> + };
> +
> +
> +Media I/O (MIO) reset
> +---------------------
> +
> +Required properties:
> +- compatible: should be one of the following:
> + "socionext,uniphier-sld3-mio-reset" - for PH1-sLD3 SoC.
> + "socionext,uniphier-ld4-mio-reset" - for PH1-LD4 SoC.
> + "socionext,uniphier-pro4-mio-reset" - for PH1-Pro4 SoC.
> + "socionext,uniphier-sld8-mio-reset" - for PH1-sLD8 SoC.
> + "socionext,uniphier-pro5-mio-reset" - for PH1-Pro5 SoC.
> + "socionext,uniphier-pxs2-mio-reset" - for ProXstream2/PH1-LD6b SoC.
> + "socionext,uniphier-ld11-mio-reset" - for PH1-LD11 SoC.
> + "socionext,uniphier-ld20-mio-reset" - for PH1-LD20 SoC.
> +- #reset-cells: should be 1.
> +
> +Note:
> +The reset node should be a child of a syscon node.
> +
> +Example:
> +
> + mioctrl@...10000 {
> + compatible = "simple-mfd", "syscon";
> + reg = <0x59810000 0x800>;
> +
> + reset {
> + compatible = "socionext,uniphier-ld20-mio-reset";
> + #reset-cells = <1>;
> + };
> +
> + other nodes ...
> + };
> +
> +
> +Peripheral reset
> +----------------
> +
> +Required properties:
> +- compatible: should be one of the following:
> + "socionext,uniphier-ld4-peri-reset" - for PH1-LD4 SoC.
> + "socionext,uniphier-pro4-peri-reset" - for PH1-Pro4 SoC.
> + "socionext,uniphier-sld8-peri-reset" - for PH1-sLD8 SoC.
> + "socionext,uniphier-pro5-peri-reset" - for PH1-Pro5 SoC.
> + "socionext,uniphier-pxs2-peri-reset" - for ProXstream2/PH1-LD6b SoC.
> + "socionext,uniphier-ld11-peri-reset" - for PH1-LD11 SoC.
> + "socionext,uniphier-ld20-peri-reset" - for PH1-LD20 SoC.
> +- #reset-cells: should be 1.
> +
> +Note:
> +The reset node should be a child of a syscon node.
> +
> +Example:
> +
> + perictrl@...20000 {
> + compatible = "simple-mfd", "syscon";
> + reg = <0x59820000 0x200>;
> +
> + reset {
> + compatible = "socionext,uniphier-ld20-peri-reset";
> + #reset-cells = <1>;
> + };
> +
> + other nodes ...
> + };
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