| Message ID | 20200422090833.9743-2-amelie.delaunay@st.com (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | e583649d87ec090444aa5347af0927cd6e8581ae |
| Headers | show |
| Series | STMFX power related fixes | expand |
On Wed, 22 Apr 2020, Amelie Delaunay wrote: > STMFX supply is disabled during suspend. To avoid a too early access to > the STMFX firmware on resume, reset the chip and wait for its firmware to > be loaded. > > Fixes: 06252ade9156 ("mfd: Add ST Multi-Function eXpander (STMFX) core driver") > Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> > --- > drivers/mfd/stmfx.c | 7 +++++++ > 1 file changed, 7 insertions(+) Applied, thanks.
diff --git a/drivers/mfd/stmfx.c b/drivers/mfd/stmfx.c index 857991cb3cbb..fde6541e347c 100644 --- a/drivers/mfd/stmfx.c +++ b/drivers/mfd/stmfx.c @@ -501,6 +501,13 @@ static int stmfx_resume(struct device *dev) } } + /* Reset STMFX - supply has been stopped during suspend */ + ret = stmfx_chip_reset(stmfx); + if (ret) { + dev_err(stmfx->dev, "Failed to reset chip: %d\n", ret); + return ret; + } + ret = regmap_raw_write(stmfx->map, STMFX_REG_SYS_CTRL, &stmfx->bkp_sysctrl, sizeof(stmfx->bkp_sysctrl)); if (ret)
STMFX supply is disabled during suspend. To avoid a too early access to the STMFX firmware on resume, reset the chip and wait for its firmware to be loaded. Fixes: 06252ade9156 ("mfd: Add ST Multi-Function eXpander (STMFX) core driver") Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> --- drivers/mfd/stmfx.c | 7 +++++++ 1 file changed, 7 insertions(+)