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authorJason A. Donenfeld <Jason@zx2c4.com>2022-10-08 18:47:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-23 22:04:56 +0300
commitca4582c286aa4465f9d1a72bef34b04ee907d42e (patch)
treed2f347d859ad983905224e5f64832643a929f8b2 /drivers/mfd
parent52826d3b2d1d8e1180a84bef7d72596d6a024a38 (diff)
downloadlinux-ca4582c286aa4465f9d1a72bef34b04ee907d42e.tar.xz
Revert "mfd: syscon: Remove repetition of the regmap_get_val_endian()"
This reverts commit 72a95859728a7866522e6633818bebc1c2519b17. It broke reboots on big-endian MIPS and MIPS64 malta QEMU instances, which use the syscon driver. Little-endian is not effected, which means likely it's important to handle regmap_get_val_endian() in this function after all. Fixes: 72a95859728a ("mfd: syscon: Remove repetition of the regmap_get_val_endian()") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Lee Jones <lee@kernel.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/syscon.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index 9489e80e905a..bdb2ce7ff03b 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -66,6 +66,14 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_clk)
goto err_map;
}
+ /* Parse the device's DT node for an endianness specification */
+ if (of_property_read_bool(np, "big-endian"))
+ syscon_config.val_format_endian = REGMAP_ENDIAN_BIG;
+ else if (of_property_read_bool(np, "little-endian"))
+ syscon_config.val_format_endian = REGMAP_ENDIAN_LITTLE;
+ else if (of_property_read_bool(np, "native-endian"))
+ syscon_config.val_format_endian = REGMAP_ENDIAN_NATIVE;
+
/*
* search for reg-io-width property in DT. If it is not provided,
* default to 4 bytes. regmap_init_mmio will return an error if values