diff options
| author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-25 14:02:14 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-30 15:44:25 -0300 |
| commit | cfd0c77d0830d33288e9da17aa10db3a61de601a (patch) | |
| tree | 5c5bdd468bc6a3b7c7f4ddba3fed70c4e8d9743e /drivers/media/usb/au0828/au0828-cards.c | |
| parent | 7f196789b3ffee243b681d3e7dab8890038db856 (diff) | |
[media] au0828: improve I2C speed
Commits 21dc61d3c0a4 and 7a1dd50b89d4 reduced the board I2C
speed to 20 MHz by default, due to a I2C stretch issue:
while xc5000 uses i2c stretch when a command is sent to it,
au0828 doesn't support this feature.
However, this is needed only for Xceive tuners. The other
I2C devices can work at the max speed.
So, revert the workarounds at board level, handling it at
I2C level, only when talking with xc5000.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/usb/au0828/au0828-cards.c')
| -rw-r--r-- | drivers/media/usb/au0828/au0828-cards.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/usb/au0828/au0828-cards.c b/drivers/media/usb/au0828/au0828-cards.c index 7fdadf9bc90b..3a7924044a87 100644 --- a/drivers/media/usb/au0828/au0828-cards.c +++ b/drivers/media/usb/au0828/au0828-cards.c @@ -46,7 +46,7 @@ struct au0828_board au0828_boards[] = { .name = "Hauppauge HVR850", .tuner_type = TUNER_XC5000, .tuner_addr = 0x61, - .i2c_clk_divider = AU0828_I2C_CLK_20KHZ, + .i2c_clk_divider = AU0828_I2C_CLK_250KHZ, .input = { { .type = AU0828_VMUX_TELEVISION, @@ -77,7 +77,7 @@ struct au0828_board au0828_boards[] = { stretch fits inside of a normal clock cycle, or else the au0828 fails to set the STOP bit. A 30 KHz clock puts the clock pulse width at 18us */ - .i2c_clk_divider = AU0828_I2C_CLK_20KHZ, + .i2c_clk_divider = AU0828_I2C_CLK_250KHZ, .input = { { .type = AU0828_VMUX_TELEVISION, @@ -108,7 +108,7 @@ struct au0828_board au0828_boards[] = { .name = "DViCO FusionHDTV USB", .tuner_type = UNSET, .tuner_addr = ADDR_UNSET, - .i2c_clk_divider = AU0828_I2C_CLK_20KHZ, + .i2c_clk_divider = AU0828_I2C_CLK_250KHZ, }, [AU0828_BOARD_HAUPPAUGE_WOODBURY] = { .name = "Hauppauge Woodbury", |