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[34.168.104.7]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2c819dbb963sm2168967a91.41.2024.06.21.16.56.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Jun 2024 16:56:16 -0700 (PDT) Date: Fri, 21 Jun 2024 16:56:13 -0700 From: William McVicker To: Peter Griffin Cc: lee@kernel.org, arnd@arndb.de, krzk@kernel.org, alim.akhtar@samsung.com, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, tudor.ambarus@linaro.org, andre.draszik@linaro.org, saravanak@google.com, semen.protsenko@linaro.org, kernel-team@android.com Subject: Re: [PATCH v3 1/2] mfd: syscon: add of_syscon_register_regmap() API Message-ID: References: <20240621115544.1655458-1-peter.griffin@linaro.org> <20240621115544.1655458-2-peter.griffin@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240621115544.1655458-2-peter.griffin@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240621_165619_821182_7115FB4F X-CRM114-Status: GOOD ( 15.52 ) 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 06/21/2024, Peter Griffin wrote: > The of_syscon_register_regmap() API allows an externally created regmap > to be registered with syscon. This regmap can then be returned to client > drivers using the syscon_regmap_lookup_by_phandle() APIs. > > The API is used by platforms where mmio access to the syscon registers is > not possible, and a underlying soc driver like exynos-pmu provides a SoC > specific regmap that can issue a SMC or hypervisor call to write the > register. > > This approach keeps the SoC complexities out of syscon, but allows common > drivers such as syscon-poweroff, syscon-reboot and friends that are used > by many SoCs already to be re-used. > > Signed-off-by: Peter Griffin > Reviewed-by: Arnd Bergmann > Reviewed-by: Sam Protsenko Tested-by: Will McVicker [...] Thanks Peter! I've tested the patch series on my Pixel 6 Pro and all is working well. I verified all the modularized drivers load and probe successfully: root@google-gs:~# lsmod Module Size Used by at24 24576 0 dwc3_exynos 12288 0 i2c_exynos5 28672 0 phy_exynos_ufs 20480 1 ufs_exynos 32768 0 phy_exynos5_usbdrd 36864 2 s3c2410_wdt 24576 0 arm_dsu_pmu 24576 0 Thanks, Will