Large EEPROMs, e.g. 24lc32, need 2 byte to address the internal memory.
These devices require that the high byte of the internal address has to be
written first.
The mxs_i2c driver currently writes the address' low byte first.
The following patch fixes the byte order of the internal address that should
be written to the I2C device.
Signed-off-by: Torsten Fleischer <to-fleischer at t-online.de>
CC: Marek Vasut <marek.vasut at gmail.com>
CC: Stefano Babic <sbabic at denx.de>
---
diff -Naur u-boot.orig/drivers/i2c/mxs_i2c.c u-boot/drivers/i2c/mxs_i2c.c
--- u-boot.orig/drivers/i2c/mxs_i2c.c
+++ u-boot/drivers/i2c/mxs_i2c.c
@@ -97,7 +97,7 @@
for (i = 0; i < alen; i++) {
data >>= 8;
- data |= ((char *)&addr)[i] << 24;
+ data |= ((char *)&addr)[alen - i - 1] << 24;
if ((i & 3) == 2)
writel(data, &i2c_regs->hw_i2c_data);
}
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