* [PATCH 1/5] dt-bindings: document the s3c24xx software-reset register [not found] <3105326.uFdOVLyXH8@phil> @ 2014-01-06 18:37 ` Heiko Stübner 2014-01-23 18:09 ` Tomasz Figa 0 siblings, 1 reply; 2+ messages in thread From: Heiko Stübner @ 2014-01-06 18:37 UTC (permalink / raw) To: kgene.kim Cc: linux-arm-kernel, linux-samsung-soc, Rob Herring, Pawel Moll, Mark Rutland, Stephen Warren, Ian Campbell, devicetree The S3C2412/S3C2413 as well as the S3C2443 and following contain a special register that restarts the system when written to. This adds a simple binding, so that it gets accessible on dt systems too. We distinguish between the two types (s3c2412, s3c2443) because the handling of the swrst register on the s3c2412 also needs to take care of a hardware glitch at reset time. Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- .../devicetree/bindings/arm/samsung/s3c24xx-swrst.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/samsung/s3c24xx-swrst.txt diff --git a/Documentation/devicetree/bindings/arm/samsung/s3c24xx-swrst.txt b/Documentation/devicetree/bindings/arm/samsung/s3c24xx-swrst.txt new file mode 100644 index 0000000..c3cacf2 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/samsung/s3c24xx-swrst.txt @@ -0,0 +1,16 @@ +SAMSUNG S3C24XX software-reset register + +Some SoCs of the series contain a special software-reset register +to let the system restart. + +Properties: + - compatible : should be one of + "samsung,s3c2412-swrst" - for S3C2412, S3C2413 + "samsung,s3c2443-swrst" - for S3C2416, S3C2443, S3C2450 + - reg : offset and length of the register. + +Example: + swrst@4c000044 { + compatible = "samsung,s3c2443-swrst"; + reg = <0x4c000044 0x4>; + }; -- 1.7.10.4 ^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH 1/5] dt-bindings: document the s3c24xx software-reset register 2014-01-06 18:37 ` [PATCH 1/5] dt-bindings: document the s3c24xx software-reset register Heiko Stübner @ 2014-01-23 18:09 ` Tomasz Figa 0 siblings, 0 replies; 2+ messages in thread From: Tomasz Figa @ 2014-01-23 18:09 UTC (permalink / raw) To: Heiko Stübner, kgene.kim Cc: linux-arm-kernel, linux-samsung-soc, Rob Herring, Pawel Moll, Mark Rutland, Stephen Warren, Ian Campbell, devicetree Hi Heiko, On 06.01.2014 19:37, Heiko Stübner wrote: > The S3C2412/S3C2413 as well as the S3C2443 and following contain a special > register that restarts the system when written to. This adds a simple > binding, so that it gets accessible on dt systems too. > > We distinguish between the two types (s3c2412, s3c2443) because the > handling of the swrst register on the s3c2412 also needs to take care > of a hardware glitch at reset time. > > Signed-off-by: Heiko Stuebner <heiko@sntech.de> > --- > .../devicetree/bindings/arm/samsung/s3c24xx-swrst.txt | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/samsung/s3c24xx-swrst.txt Is there really a need to have separate bindings for this? As far as I can see, the swreset register is a part of the clock controller, so restart function could be provided by clock driver and there would be no need to change anything in DT. Best regards, Tomasz ^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-01-06 18:37 ` [PATCH 1/5] dt-bindings: document the s3c24xx software-reset register Heiko Stübner
2014-01-23 18:09 ` Tomasz Figa
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