mmc: sdhci-pci: Add max-frequency device property for Intel controllers

ahunter6 · storulf · commit 809090e8e212 · 2018-12-17T08:26:24.000+01:00
Add support for the mmc max-frequency device property for Intel BYT-based
host controllers.

Signed-off-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
@@ -710,11 +710,15 @@ static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
 static void byt_probe_slot(struct sdhci_pci_slot *slot)
 {
 	struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
+	struct device *dev = &slot->chip->pdev->dev;
+	struct mmc_host *mmc = slot->host->mmc;
 
 	byt_read_dsm(slot);
 
 	ops->execute_tuning = intel_execute_tuning;
 	ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
+
+	device_property_read_u32(dev, "max-frequency", &mmc->f_max);
 }
 
 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)

Original file line number	Diff line number	Diff line change
`@@ -710,11 +710,15 @@ static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)`
`710`	`710`	`static void byt_probe_slot(struct sdhci_pci_slot *slot)`
`711`	`711`	`{`
`712`	`712`	`struct mmc_host_ops *ops = &slot->host->mmc_host_ops;`
	`713`	`+ struct device *dev = &slot->chip->pdev->dev;`
	`714`	`+ struct mmc_host *mmc = slot->host->mmc;`
`713`	`715`
`714`	`716`	`byt_read_dsm(slot);`
`715`	`717`
`716`	`718`	`ops->execute_tuning = intel_execute_tuning;`
`717`	`719`	`ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;`
	`720`	`+`
	`721`	`+ device_property_read_u32(dev, "max-frequency", &mmc->f_max);`
`718`	`722`	`}`
`719`	`723`
`720`	`724`	`static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)`