linux-kernel - [PATCH v5 12/22] ARM: sun7i-a20: Add support for the C1 SRAM region with the SRAM controller

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Date:   Tue, 10 Jul 2018 10:01:04 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Marco Franchi <marco.franchi@....com>,
        Icenowy Zheng <icenowy@...c.io>,
        Hans Verkuil <hverkuil@...all.nl>,
        Keiichi Watanabe <keiichiw@...omium.org>,
        Jonathan Corbet <corbet@....net>,
        Smitha T Murthy <smitha.t@...sung.com>,
        Tom Saeger <tom.saeger@...cle.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        "David S . Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Jacob Chen <jacob-chen@...wrt.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Benoit Parrot <bparrot@...com>,
        Todor Tomov <todor.tomov@...aro.org>,
        Alexandre Courbot <acourbot@...omium.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Pawel Osciak <posciak@...omium.org>,
        Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        linux-sunxi@...glegroups.com,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Hugues Fruchet <hugues.fruchet@...com>,
        Randy Li <ayaka@...lik.info>
Subject: [PATCH v5 12/22] ARM: sun7i-a20: Add support for the C1 SRAM region with the SRAM controller

From: Maxime Ripard <maxime.ripard@...tlin.com>

This adds support for the C1 SRAM region (to be used with the SRAM
controller driver) for the A20 platform. The region is shared
between the Video Engine and the CPU.

Signed-off-by: Maxime Ripard <maxime.ripard@...tlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 arch/arm/boot/dts/sun7i-a20.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index 59abb623b249..38999d791cb5 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -276,6 +276,20 @@
 					status = "disabled";
 				};
 			};
+
+			sram_c: sram@...0000 {
+				compatible = "mmio-sram";
+				reg = <0x01d00000 0x80000>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0 0x01d00000 0x80000>;
+
+				ve_sram: sram-section@0 {
+					compatible = "allwinner,sun7i-a20-sram-c1",
+						     "allwinner,sun4i-a10-sram-c1";
+					reg = <0x000000 0x80000>;
+				};
+			};
 		};
 
 		nmi_intc: interrupt-controller@...0030 {
-- 
2.17.1