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[60.251.58.169]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-72057a3c024sm363557b3a.192.2024.10.24.23.01.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Oct 2024 23:01:10 -0700 (PDT) From: Ben Chuang To: adrian.hunter@intel.com, ulf.hansson@linaro.org, victor.shih@genesyslogic.com.tw Cc: greg.tu@genesyslogic.com.tw, ben.chuang@genesyslogic.com.tw, HL.Liu@genesyslogic.com.tw, Lucas.Lai@genesyslogic.com.tw, benchuanggli@gmail.com, victorshihgli@gmail.com, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] mmc: sdhci-pci-gli: GL9767: Fix low power mode in the SD Express process Date: Fri, 25 Oct 2024 14:00:17 +0800 Message-ID: <20241025060017.1663697-2-benchuanggli@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241025060017.1663697-1-benchuanggli@gmail.com> References: <20241025060017.1663697-1-benchuanggli@gmail.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Ben Chuang When starting the SD Express process, the low power negotiation mode will be disabled, so we need to re-enable it after switching back to SD mode. Fixes: 0e92aec2efa0 ("mmc: sdhci-pci-gli: Add support SD Express card for GL9767") Signed-off-by: Ben Chuang Signed-off-by: Ben Chuang --- drivers/mmc/host/sdhci-pci-gli.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c index 22a927ce2c88..68ce4920e01e 100644 --- a/drivers/mmc/host/sdhci-pci-gli.c +++ b/drivers/mmc/host/sdhci-pci-gli.c @@ -1068,6 +1068,9 @@ static int gl9767_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios) sdhci_writew(host, value, SDHCI_CLOCK_CONTROL); } + pci_read_config_dword(pdev, PCIE_GLI_9767_CFG, &value); + value &= ~PCIE_GLI_9767_CFG_LOW_PWR_OFF; + pci_write_config_dword(pdev, PCIE_GLI_9767_CFG, value); gl9767_vhs_read(pdev); return 0;