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[194.187.74.233]) by smtp.gmail.com with ESMTPSA id u22-20020a2e9f16000000b0029353491df6sm294695ljk.48.2023.02.20.09.49.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Feb 2023 09:49:38 -0800 (PST) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: Srinivas Kandagatla , Rob Herring , Krzysztof Kozlowski Cc: Matthias Brugger , Kunihiko Hayashi , Masami Hiramatsu , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= Subject: [PATCH V3 0/2] nvmem: add and use generic MMIO NVMEM Date: Mon, 20 Feb 2023 18:49:28 +0100 Message-Id: <20230220174930.7440-1-zajec5@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230220_094942_519477_A4B61FCA X-CRM114-Status: GOOD ( 11.65 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Rafał Miłecki MMIO accessible NVMEM devices should be simple enough to allow using a single binding & driver for them. In V3 I didn't decide to modify existing Mediatek & UniPhier drivers as there are some concerns about adding writing support to them. If needed that can be done later. I decided to support Broadcom's NVRAM with generic driver though. That is my main goal right now. To let generic code handle NVRAM access and let NVRAM specific driver handle its content. That way it can be reused for other NVMEM devices later (once we get layouts support). Rafał Miłecki (2): dt-bindings: nvmem: mmio: new binding for MMIO accessible NVMEM devices nvmem: add generic driver for devices with MMIO access .../devicetree/bindings/nvmem/mmio.yaml | 50 +++++++ drivers/nvmem/Kconfig | 10 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/mmio.c | 125 ++++++++++++++++++ 4 files changed, 187 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/mmio.yaml create mode 100644 drivers/nvmem/mmio.c