From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Subject: [PATCH v2 4/5] ARM: dts: sun7i: Add A20 SRAM and SRAM controller Date: Thu, 26 Mar 2015 15:53:44 +0100 Message-ID: <1427381625-6942-5-git-send-email-hdegoede@redhat.com> References: <1427381625-6942-1-git-send-email-hdegoede@redhat.com> Return-path: In-Reply-To: <1427381625-6942-1-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Maxime Ripard , Arnd Bergmann , Jens Kuske Cc: Chen-Yu Tsai , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree , linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org, Hans de Goede List-Id: devicetree@vger.kernel.org From: Maxime Ripard The A20 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: Maxime Ripard [hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org: Do not change soc node name, change compatible to sun4i-a10-sram-controller to match the driver change] Signed-off-by: Hans de Goede --- arch/arm/boot/dts/sun7i-a20.dtsi | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi index 465a19f..e6f4a33 100644 --- a/arch/arm/boot/dts/sun7i-a20.dtsi +++ b/arch/arm/boot/dts/sun7i-a20.dtsi @@ -529,12 +529,46 @@ }; }; + /* + * Note we use the address where the mmio registers start, not where + * the 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>; + }; + nmi_intc: interrupt-controller@01c00030 { compatible = "allwinner,sun7i-a20-sc-nmi"; interrupt-controller; -- 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