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Wed, 2 Dec 2020 22:16:50 -0500 (EST) Subject: Re: [PATCH 7/8] arm64: dts: allwinner: Add Allwinner H616 .dtsi file To: Andre Przywara , Maxime Ripard , Chen-Yu Tsai , Jernej Skrabec Cc: devicetree@vger.kernel.org, Linus Walleij , linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Rob Herring , Icenowy Zheng , Yangtao Li , linux-arm-kernel@lists.infradead.org References: <20201202135409.13683-1-andre.przywara@arm.com> <20201202135409.13683-8-andre.przywara@arm.com> From: Samuel Holland Message-ID: <3b4f4bf6-2fba-5d35-bdf5-74b8ced10357@sholland.org> Date: Wed, 2 Dec 2020 21:16:49 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20201202135409.13683-8-andre.przywara@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Andre, On 12/2/20 7:54 AM, Andre Przywara wrote: ... > + soc { > + compatible = "simple-bus"; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0x0 0x0 0x0 0x40000000>; > + > + syscon: syscon@3000000 { > + compatible = "allwinner,sun50i-h616-system-control", > + "allwinner,sun50i-a64-system-control"; > + reg = <0x03000000 0x1000>; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges; > + > + sram_c: sram@28000 { > + compatible = "mmio-sram"; > + reg = <0x00028000 0x30000>; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0 0x00028000 0x30000>; > + }; > + > + sram_c1: sram@1a00000 { > + compatible = "mmio-sram"; > + reg = <0x01a00000 0x200000>; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0 0x01a00000 0x200000>; > + > + ve_sram: sram-section@0 { > + compatible = "allwinner,sun50i-h616-sram-c1", > + "allwinner,sun4i-a10-sram-c1"; > + reg = <0x000000 0x200000>; > + }; > + }; > + }; You mentioned that you could not find a SRAM A2. How were these SRAM ranges verified? If you can load eGON.BT0 larger than 32 KiB, then presumably NBROM uses SRAM C, and it is in the manual, but I see no mention of SRAM C1. Cheers, Samuel