diff options
| author | Divya Sasidharan <divya.s.sasidharan@intel.com> | 2017-12-29 14:44:12 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-03-22 18:16:50 -0700 |
| commit | b9fbc80fa332f2869539ce4fb49b3dda8fc0515c (patch) | |
| tree | 099825b7c79278f34cb3ee99d4c260dd4da77441 /driver/usb_mux_ps874x.c | |
| parent | 4c4d80ca5dcda0224c514f55dd9d51c2fb0922a1 (diff) | |
| download | chrome-ec-b9fbc80fa332f2869539ce4fb49b3dda8fc0515c.tar.gz | |
usb_mux: Fix incorrect revision check at init for ps874x
This patch fixes revision check for ps8xxx usb mux and
thereby removing print "Error initializing mux port(x)"
at bootup.
This is just a cosmetic change and should not affect any
functionality.
BUG=none
BRANCH=glkrvp
TEST=On glkrvp: Boot up the system to verify the
error message setting mux is gone at init.
Change-Id: I0926077d50e818bd93aaa4214106b2f8067d9710
Signed-off-by: Divya Sasidharan <divya.s.sasidharan@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/846291
Commit-Ready: Divya S Sasidharan <divya.s.sasidharan@intel.com>
Tested-by: Divya S Sasidharan <divya.s.sasidharan@intel.com>
Reviewed-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Diffstat (limited to 'driver/usb_mux_ps874x.c')
| -rw-r--r-- | driver/usb_mux_ps874x.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/driver/usb_mux_ps874x.c b/driver/usb_mux_ps874x.c index 76b7eb26c3..900ae0763a 100644 --- a/driver/usb_mux_ps874x.c +++ b/driver/usb_mux_ps874x.c @@ -33,20 +33,27 @@ static int ps874x_init(int i2c_addr) /* * Verify revision / chip ID registers. - * From Parade: PS8743 may have REVISION_ID1 as 0 or 1, - * PS8740 may have REVISION_ID2 as 0 or 1, - * 1 is derived from 0 and have same functionality. */ res = ps874x_read(i2c_addr, PS874X_REG_REVISION_ID1, &val); if (res) return res; - if (val < PS874X_REVISION_ID1) + +#ifdef CONFIG_USB_MUX_PS8743 + /* + * From Parade: PS8743 may have REVISION_ID1 as 0 or 1 + * Rev 1 is derived from Rev 0 and have same functionality. + */ + if (val != PS874X_REVISION_ID1_0 && val != PS874X_REVISION_ID1_1) + return EC_ERROR_UNKNOWN; +#else + if (val != PS874X_REVISION_ID1) return EC_ERROR_UNKNOWN; +#endif res = ps874x_read(i2c_addr, PS874X_REG_REVISION_ID2, &val); if (res) return res; - if (val < PS874X_REVISION_ID2) + if (val != PS874X_REVISION_ID2) return EC_ERROR_UNKNOWN; res = ps874x_read(i2c_addr, PS874X_REG_CHIP_ID1, &val); |