target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch

   1 From dc50e276ae888c06e2daf8549b85dd3ed1765115 Mon Sep 17 00:00:00 2001
   2 From: Juerg Haefliger <juergh@canonical.com>
   3 Date: Wed, 29 Sep 2021 11:42:23 +0200
   4 Subject: [PATCH] mmc: sdhci-iproc: Fix vmmc regulators (pre-bcm2711)
   5
   6 The Linux support for controlling card power via regulators appears to
   7 be contentious. I would argue that the default behaviour is contrary to
   8 the SDHCI spec - turning off the power writes a reserved value to the
   9 SD Bus Voltage Select field of the Power Control Register, which
  10 seems to kill the Arasan/iProc controller - but fortunately there is a
  11 hook in sdhci_ops to override the behaviour.
  12
  13 Signed-off-by: Juerg Haefliger <juergh@canonical.com>
  14 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  15 ---
  16  drivers/mmc/host/sdhci-iproc.c | 1 +
  17  1 file changed, 1 insertion(+)
  18
  19 --- a/drivers/mmc/host/sdhci-iproc.c
  20 +++ b/drivers/mmc/host/sdhci-iproc.c
  21 @@ -207,6 +207,7 @@ static const struct sdhci_ops sdhci_ipro
  22         .write_b = sdhci_iproc_writeb,
  23         .set_clock = sdhci_set_clock,
  24         .get_max_clock = sdhci_iproc_get_max_clock,
  25 +       .set_power = sdhci_set_power_and_bus_voltage,
  26         .set_bus_width = sdhci_set_bus_width,
  27         .reset = sdhci_reset,
  28         .set_uhs_signaling = sdhci_set_uhs_signaling,