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Wed, 27 Aug 2025 09:32:18 -0700 (PDT) X-Received: by 2002:a05:6214:5344:b0:70d:9819:879a with SMTP id 6a1803df08f44-70d98198d82mr255971066d6.58.1756312337610; Wed, 27 Aug 2025 09:32:17 -0700 (PDT) Received: from [10.67.48.245] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-70dc969f011sm44700806d6.22.2025.08.27.09.32.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Aug 2025 09:32:16 -0700 (PDT) Message-ID: <2ff3ec4e-4824-4d03-bab2-a69229764692@broadcom.com> Date: Wed, 27 Aug 2025 09:32:11 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/3] pinctrl: bcm: Add STB family pin controller driver To: Andrea della Porta , Stefan Wahren Cc: linus.walleij@linaro.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Catalin Marinas , Will Deacon , iivanov@suse.de, svarbanov@suse.de, mbrugger@suse.com, Jonathan Bell , Phil Elwell References: <6d812c08-341f-4f7f-a9ed-4545217cb8a8@gmx.net> 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 X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250827_093220_901934_3B0B9E03 X-CRM114-Status: GOOD ( 15.99 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 8/21/25 08:36, Andrea della Porta wrote: > Hi Stefan, > > On 11:18 Tue 19 Aug , Stefan Wahren wrote: >> Hi Andrea, >> >> Am 11.08.25 um 16:46 schrieb Andrea della Porta: >>> From: "Ivan T. Ivanov" >>> >>> This driver provide pin muxing and configuration functionality >>> for BCM2712 SoC used by RPi5. According to [1] this chip is an >>> instance of the one used in Broadcom STB product line. >> i'm not sure about the whole driver naming. The cover letter describe it as >> "pin control driver for BCM2712 SoC", but this patch is described as "STB >> family pin controller driver". So as a reviewer, I'm a little bit confused >> of the domain of this driver. Is it for a single SoC or really for a whole >> family of many SoCs? > > It seems that this is indeed a whole family of which BCM2712 is the (first?) > incarnation. I'm not really aware whether there exist other physical > implementations but I'll amend the comment accordingly. > Please also see: > https://lore.kernel.org/lkml/d6ab66cf-09ac-4f53-9102-11f207d16db5@broadcom.com/ It's not the first, far from it, that pinctrl/pinmux design dates back to the first Broadcom STB SoC (BCM7038). -- Florian