From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Subject: Re: [PATCH 2/5] ARM: dts: sun4i: Add A10 SRAM and SRAM controller Date: Thu, 26 Mar 2015 15:42:31 +0100 Message-ID: <55141AD7.1040701@redhat.com> References: <1426877569-11493-1-git-send-email-hdegoede@redhat.com> <1426877569-11493-3-git-send-email-hdegoede@redhat.com> <20150324152034.GB4951@lukather> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150324152034.GB4951@lukather> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Maxime Ripard Cc: Arnd Bergmann , Jens Kuske , Chen-Yu Tsai , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree , linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-Id: devicetree@vger.kernel.org Hi, On 24-03-15 16:20, Maxime Ripard wrote: > On Fri, Mar 20, 2015 at 07:52:46PM +0100, Hans de Goede wrote: >> The A10 has a few SRAM that can be mapped either to a device or to the CPU, >> with the mapping being controlled by a SRAM controller. >> >> Since most of the time these SRAM won't be accessible by the CPU, >> we can't use the mmio-sram driver and compatible. >> >> Signed-off-by: Hans de Goede >> --- >> arch/arm/boot/dts/sun4i-a10.dtsi | 34 ++++++++++++++++++++++++++++++++++ >> 1 file changed, 34 insertions(+) >> >> diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi >> index b66ebb3..88f57b4 100644 >> --- a/arch/arm/boot/dts/sun4i-a10.dtsi >> +++ b/arch/arm/boot/dts/sun4i-a10.dtsi >> @@ -451,12 +451,46 @@ >> }; >> }; >> >> + /* >> + * Note we use the address were mmio registers start, not where the > ^ where > Fixed in patches 2 to 4. Regards, Hans >> + * SRAM blocks start, this cannot be changed because that would be >> + * a devicetree ABI change. >> + */ >> soc@01c00000 { >> compatible = "simple-bus"; >> #address-cells = <1>; >> #size-cells = <1>; >> ranges; >> >> + sram@00000000 { >> + compatible = "allwinner,sun4i-a10-sram"; >> + reg = <0x00000000 0x4000>; >> + allwinner,sram-name = "A1"; >> + }; >> + >> + sram@00004000 { >> + compatible = "allwinner,sun4i-a10-sram"; >> + reg = <0x00004000 0x4000>; >> + allwinner,sram-name = "A2"; >> + }; >> + >> + sram@00008000 { >> + compatible = "allwinner,sun4i-a10-sram"; >> + reg = <0x00008000 0x4000>; >> + allwinner,sram-name = "A3-A4"; >> + }; >> + >> + sram@00010000 { >> + compatible = "allwinner,sun4i-a10-sram"; >> + reg = <0x00010000 0x1000>; >> + allwinner,sram-name = "D"; >> + }; >> + >> + sram-controller@01c00000 { >> + compatible = "allwinner,sun4i-a10-sram-controller"; >> + reg = <0x01c00000 0x30>; >> + }; >> + >> dma: dma-controller@01c02000 { >> compatible = "allwinner,sun4i-a10-dma"; >> reg = <0x01c02000 0x1000>; >> -- >> 2.3.3 >> > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html