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([2a02:168:6806:0:40f6:41b6:8914:e80b]) by smtp.gmail.com with ESMTPSA id h19-20020a05600c351300b003d9a86a13bfsm6056106wmq.28.2023.01.07.06.43.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Jan 2023 06:43:22 -0800 (PST) From: Klaus Kudielka To: "Andrew Lunn" , "Gregory Clement" , "Sebastian Hesselbarth" , "Rob Herring" , "Krzysztof Kozlowski" , =?utf-8?q?Pali_R?= =?utf-8?q?oh=C3=A1r?= , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Thomas Petazzoni , Chris Packham , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Klaus Kudielka Subject: [PATCH v2 1/2] Revert "ARM: dts: armada-38x: Fix compatible string for gpios" Date: Sat, 7 Jan 2023 15:41:48 +0100 Message-Id: <20230107144149.5743-1-klaus.kudielka@gmail.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754375596466188717?= X-GMAIL-MSGID: =?utf-8?q?1754375596466188717?= This reverts commit c4de4667f15d04ef5920bacf41e514ec7d1ef03d, which causes a regression on Turris Omnia (Armada 385): GPIO interrupts cease to work, ending up in the DSA switch being non-functional. The blamed commit is incorrect in the first place: If compatible = "marvell,armadaxp-gpio", the second (address, size) pair of the reg property must to point to the per-CPU interrupt registers <0x18800 0x30> / <0x18840 0x30>, and not to the blink enable registers <0x181c0 0x08> / <0x181c8 0x08>. But even fixing that leaves the GPIO interrupts broken on the Omnia. Furthermore: Commit 5f79c651e81e explains very well, why the gpio-mvebu driver does not work reliably with per-CPU interrupts. Commit 988c8c0cd04d deprecates compatible = marvell,armadaxp-gpio for this reason. Fixes: c4de4667f15d ("ARM: dts: armada-38x: Fix compatible string for gpios") Reported-by: Klaus Kudielka Link: https://lore.kernel.org/r/f24474e70c1a4e9692bd596ef6d97ceda9511245.camel@gmail.com/ Signed-off-by: Klaus Kudielka Reviewed-by: Andrew Lunn --- v1->v2: Be more explicit about the regression, and about the reg property. arch/arm/boot/dts/armada-38x.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi index 12933eff41..446861b6b1 100644 --- a/arch/arm/boot/dts/armada-38x.dtsi +++ b/arch/arm/boot/dts/armada-38x.dtsi @@ -304,7 +304,7 @@ spdif_pins: spdif-pins { }; gpio0: gpio@18100 { - compatible = "marvell,armadaxp-gpio", + compatible = "marvell,armada-370-gpio", "marvell,orion-gpio"; reg = <0x18100 0x40>, <0x181c0 0x08>; reg-names = "gpio", "pwm"; @@ -323,7 +323,7 @@ gpio0: gpio@18100 { }; gpio1: gpio@18140 { - compatible = "marvell,armadaxp-gpio", + compatible = "marvell,armada-370-gpio", "marvell,orion-gpio"; reg = <0x18140 0x40>, <0x181c8 0x08>; reg-names = "gpio", "pwm";