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[2603:8001:4200:6311:92a0:3d53:9224:b276]) by smtp.gmail.com with ESMTPSA id t1-20020aa79461000000b0058da7e58008sm4904189pfq.36.2023.01.28.18.27.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Jan 2023 18:27:02 -0800 (PST) From: Chris Healy To: cphealy@gmail.com, andrew@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net, neil.armstrong@linaro.org, khilman@baylibre.com, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, jeremy.wang@amlogic.com Cc: Chris Healy Subject: [PATCH 1/1] net: phy: meson-gxl: Add generic dummy stubs for MMD register access Date: Sat, 28 Jan 2023 18:26:15 -0800 Message-Id: <20230129022615.379711-1-cphealy@gmail.com> X-Mailer: git-send-email 2.39.1 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?1756322227458394008?= X-GMAIL-MSGID: =?utf-8?q?1756322227458394008?= From: Chris Healy The Meson G12A Internal PHY does not support standard IEEE MMD extended register access, therefore add generic dummy stubs to fail the read and write MMD calls. This is necessary to prevent the core PHY code from erroneously believing that EEE is supported by this PHY even though this PHY does not support EEE, as MMD register access returns all FFFFs. Signed-off-by: Chris Healy --- drivers/net/phy/meson-gxl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c index c49062ad72c6..5e41658b1e2f 100644 --- a/drivers/net/phy/meson-gxl.c +++ b/drivers/net/phy/meson-gxl.c @@ -271,6 +271,8 @@ static struct phy_driver meson_gxl_phy[] = { .handle_interrupt = meson_gxl_handle_interrupt, .suspend = genphy_suspend, .resume = genphy_resume, + .read_mmd = genphy_read_mmd_unsupported, + .write_mmd = genphy_write_mmd_unsupported, }, };