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dm: i2c: dts: Support an offset-len device tree property

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Since U-Boot can support different offset lengths (0-4 bytes), add a device
tree property to specify this. This avoids hard-coding it in the driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2015-01-26 20:29:37 -07:00
parent 189d80166b
commit 7132b9fd68
2 changed files with 30 additions and 1 deletions
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3
drivers/i2c/i2c-uclass.c
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@@ -420,7 +420,8 @@ int i2c_deblock(struct udevice *bus)
int i2c_chip_ofdata_to_platdata(const void *blob, int node,
struct dm_i2c_chip *chip)
{
chip->offset_len = 1; /* default */
chip->offset_len = fdtdec_get_int(gd->fdt_blob, node,
"u-boot,i2c-offset-len", 1);
chip->flags = 0;
chip->chip_addr = fdtdec_get_int(gd->fdt_blob, node, "reg", -1);
if (chip->chip_addr == -1) {