diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch b/target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch new file mode 100644 index 0000000000..15f225c8e6 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch @@ -0,0 +1,28 @@ +From dc50e276ae888c06e2daf8549b85dd3ed1765115 Mon Sep 17 00:00:00 2001 +From: Juerg Haefliger <juergh@canonical.com> +Date: Wed, 29 Sep 2021 11:42:23 +0200 +Subject: [PATCH] mmc: sdhci-iproc: Fix vmmc regulators (pre-bcm2711) + +The Linux support for controlling card power via regulators appears to +be contentious. I would argue that the default behaviour is contrary to +the SDHCI spec - turning off the power writes a reserved value to the +SD Bus Voltage Select field of the Power Control Register, which +seems to kill the Arasan/iProc controller - but fortunately there is a +hook in sdhci_ops to override the behaviour. + +Signed-off-by: Juerg Haefliger <juergh@canonical.com> +Signed-off-by: Phil Elwell <phil@raspberrypi.com> +--- + drivers/mmc/host/sdhci-iproc.c | 1 + + 1 file changed, 1 insertion(+) + +--- a/drivers/mmc/host/sdhci-iproc.c ++++ b/drivers/mmc/host/sdhci-iproc.c +@@ -207,6 +207,7 @@ static const struct sdhci_ops sdhci_ipro + .write_b = sdhci_iproc_writeb, + .set_clock = sdhci_set_clock, + .get_max_clock = sdhci_iproc_get_max_clock, ++ .set_power = sdhci_set_power_and_bus_voltage, + .set_bus_width = sdhci_set_bus_width, + .reset = sdhci_reset, + .set_uhs_signaling = sdhci_set_uhs_signaling, |