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Mon, 29 Jul 2024 15:07:17 -0700 (PDT) Received: from [10.67.48.245] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-44fe8187c0fsm44783511cf.55.2024.07.29.15.07.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Jul 2024 15:07:16 -0700 (PDT) Message-ID: <70365646-ee0d-485f-b865-e0aaa304d758@broadcom.com> Date: Mon, 29 Jul 2024 15:07:12 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RESEND v2 0/2] ARM: dts: bcm-mobile: Split out nodes used by both BCM21664 and BCM23550 To: Artur Weber , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Ray Jui , Scott Branden Cc: Broadcom internal kernel review list , Stanislav Jakubek , ~postmarketos/upstreaming@lists.sr.ht, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240729-bcm21664-common-v2-0-ebc21a89bf63@gmail.com> Content-Language: en-US From: Florian Fainelli Autocrypt: addr=florian.fainelli@broadcom.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 7/29/24 05:34, Artur Weber wrote: > The BCM21664 and BCM23550 are nearly identical to each other in terms > of register layout. This was verified against a downstream kernel[1] - > Broadcom's kernel has "RDB" directories which includes headers with > the full register maps for the included hardware. Running: > > diff --recursive arch/arm/mach-{hawaii,java}/include/mach/rdb > > reveals that the differences are minuscule - some things related to > ISP and H264 decoding. Most of the other differences are related to > the different CPUs in the two chipsets - the BCM21664 has 2x Cortex-A9 > cores, and the BCM23550 has 4x Cortex-A7 cores. > > In mainline, most drivers are also re-used between the two. > > To make development for both platforms easier, split out the common > nodes into a separate DTSI, bcm2166x-common.dtsi. This only leaves > the device-specific nodes - so, CPU and related things - in the SoC- > specific DTSIs (bcm21664.dtsi and bcm23550.dtsi). > > The new DTSI is based off the bcm23550.dtsi, with its split into > busses. Since it's pretty much 99% identical, I kept the licensing > of the original file (BSD 3-clause). The license for the bcm21664.dtsi > file remains GPL 2.0 as it originally was. > > make CHECK_DTBS=y on bcm21664-garnet.dtb and bcm23550-sparrow.dtb > seem to pass fine for me (thanks to Stanislav Jakubek for converting > the bindings to YAML format!). > > [1] https://github.com/knuxdroid/android_kernel_samsung_baffinlite > > Signed-off-by: Artur Weber Thanks for resending, I had those on my radar to push out, now done! Applied to https://github.com/Broadcom/stblinux/commits/devicetree/next -- Florian