[PATCH 1/4] mmc: arm_pl180_mmci: Don't bind to all arm, primecell devices

[Stephan Gerhold]

The arm,primecell compatible is used for lots of different types
of devices, e.g. I2C, SPI, coresight, ... We really should not bind
the MMC driver to all of them.

Looking through the device trees in U-Boot there seems to be always
a second compatible string for the pl180 device, either arm,pl180
(already listed) or arm,pl18x. Add the "arm,pl18x" compatible to the
list but remove the generic "arm,primecell".

Note that on Linux these compatibles cannot be found in drivers
because AMBA/primecell devices are matched based on their peripheral ID
instead of the compatible.

This fixes the following error messages when booting the ST-Ericsson
U8500 "stemmy" board with the arm_pl180_mmci driver enabled:

  MMC:   ptm at 801ae000 - probe failed: -38
  ptm at 801af000 - probe failed: -38
  funnel at 801a6000 - probe failed: -38
  tpiu at 80190000 - probe failed: -38
  etb at 801a4000 - probe failed: -38

Cc: Patrice Chotard <patrice.chotard at st.com>
Fixes: 6f41d1a17e20 ("mmc: arm_pl180_mmci: Sync compatible with kernel")
Signed-off-by: Stephan Gerhold <stephan at gerhold.net>
---

 drivers/mmc/arm_pl180_mmci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index b2d1b4f9aa..5d1ee64356 100644
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -539,7 +539,7 @@ static int arm_pl180_mmc_of_to_plat(struct udevice *dev)
 
 static const struct udevice_id arm_pl180_mmc_match[] = {
 	{ .compatible = "arm,pl180" },
-	{ .compatible = "arm,primecell" },
+	{ .compatible = "arm,pl18x" },
 	{ /* sentinel */ }
 };
 
-- 
2.32.0