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MLK-10038-1: mfd: si476x-i2c: Add support of si476x-rev4.0 board 

Currently, si476x-rev1.0 and si476x-rev4.0 board just support A10
compatible command set. For si476x-rev1.0 board, its firmware revision is
unsupported and will revert to A10 compatible function. For si476x-rev4.0
board, its firmware revision is two and will use A30 function, but A30
command set function can't work for the rev4.0 board.
So make the command set configurable in dts. If "revision-a10" is present,
set the revision to SI476X_REVISION_A10 to use A10 compatible commit set.
Otherwise, get the revision from si476x register.

Signed-off-by: Zidan Wang <b50113@freescale.com>
(cherry picked from commit b648714c3b71ee084188ae04b1e6a6f2554fe2cb)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
5.4-rM2-2.2.x-imx-squashed
Zidan Wang 2014-12-19 11:13:01 +08:00 committed by Dong Aisheng
parent 73a126450a
commit c0195d1455
1 changed files with 8 additions and 4 deletions
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12
drivers/mfd/si476x-i2c.c
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@ -799,10 +799,14 @@ static int si476x_core_probe(struct i2c_client *client,
/* Power down si476x first */
si476x_core_stop(core, true);
rval = si476x_core_get_revision_info(core);
if (rval < 0) {
rval = -ENODEV;
goto free_kfifo;
if (of_property_read_bool(client->dev.of_node, "revision-a10"))
core->revision = SI476X_REVISION_A10;
else {
rval = si476x_core_get_revision_info(core);
if (rval < 0) {
rval = -ENODEV;
goto free_kfifo;
}
}
cell_num = 0;