summaryrefslogtreecommitdiff
path: root/arch/arm/boot/dts/ste-href.dtsi
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@linaro.org>2019-11-26 13:31:16 +0100
committerLinus Walleij <linus.walleij@linaro.org>2019-12-09 14:45:01 +0100
commit27e7c033d3b4101bc3b9a344265de5ae89e09b42 (patch)
tree0fd21cf5e56b9a2653e586f941c8f09a91f370e6 /arch/arm/boot/dts/ste-href.dtsi
parentb2ee5877508b491ce7d18fc50b2c7b670aef1b79 (diff)
ARM: dts: ux500: Drop pulls on I2C buses
The I2C block in the Ux500 uses internal pull-ups on the SoC, in fact it has to: in HS mode, the I2C block will need to autonomously take control over the pull-up line to do its job. This can be clearly seen from the SoC manual which states that the silicon has a line named "en_cspu_hs" which enables current source pull-up for high speed mode. Another hint is that the vendor code tree never enabled the pull up on these lines, despite being deployed on boards that lack external pull-up resistors. Tested on the Ux500 reference designs without any problems. Cc: Stephan Gerhold <stephan@gerhold.net> Reported-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20191126123116.56244-1-linus.walleij@linaro.org Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/ste-href.dtsi')
0 files changed, 0 insertions, 0 deletions