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[35.228.215.61]) by smtp.gmail.com with ESMTPSA id o25-20020ac24959000000b004e84d64ab51sm5061405lfi.58.2023.03.28.03.15.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Mar 2023 03:15:19 -0700 (PDT) From: Tudor Ambarus To: nicolas.ferre@microchip.com, claudiu.beznea@microchip.com Cc: alexandre.belloni@bootlin.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, tudor.ambarus@linaro.org Subject: [PATCH v3 0/4] ARM: dts: at91: Set sst26vf064b SPI NOR flash at its maxumum frequency Date: Tue, 28 Mar 2023 10:15:13 +0000 Message-Id: <20230328101517.1595738-1-tudor.ambarus@linaro.org> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes in v3: Update S-o-b tag to match author's email. Changes in v2: update value of spi-cs-setup-ns as it was changed to u32 since the first proposal. v1 at: https://lore.kernel.org/linux-mtd/20221117105249.115649-1-tudor.ambarus@microchip.com/ --- SPI NOR flashes have specific cs-setup time requirements without which they can't work at frequencies close to their maximum supported frequency, as they miss the first bits of the instruction command. Unrecognized commands are ignored, thus the flash will be unresponsive. Introduce the spi-cs-setup-ns property to allow spi devices to specify their cs setup time. Tudor Ambarus (4): ARM: dts: at91-sama5d27_wlsom1: Set sst26vf064b SPI NOR flash at its maximum frequency ARM: dts: at91-sama5d27_som1: Set sst26vf064b SPI NOR flash at its maximum frequency ARM: dts: at91: sama5d2_icp: Set sst26vf064b SPI NOR flash at its maximum frequency ARM: dts: at91: sam9x60ek: Set sst26vf064b SPI NOR flash at its maximum frequency arch/arm/boot/dts/at91-sam9x60ek.dts | 3 ++- arch/arm/boot/dts/at91-sama5d27_som1.dtsi | 3 ++- arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi | 3 ++- arch/arm/boot/dts/at91-sama5d2_icp.dts | 3 ++- 4 files changed, 8 insertions(+), 4 deletions(-) -- 2.40.0.348.gf938b09366-goog