Re: [PATCH V1] arm64: dts: qcom: sc7180: Use maximum drive strength values for eMMC
From: Doug Anderson <hidden>
Date: 2021-08-19 13:44:43
Also in:
linux-arm-msm, linux-devicetree, lkml
From: Doug Anderson <hidden>
Date: 2021-08-19 13:44:43
Also in:
linux-arm-msm, linux-devicetree, lkml
Hi, On Tue, Aug 17, 2021 at 6:58 AM Doug Anderson [off-list ref] wrote:
quoted
pinconf-data { pins = "sdc1_data"; bias-pull-up; - drive-strength = <10>; + drive-strength = <16>;I could be convinced that this is the right thing to do, but I want to really make sure that it has had sufficient testing. Specifically as this patch is written we'll be updating the drive strength for all boards. Increasing the drive strength can sometimes introduce new problems (reflections, noise, ...) so we have to be confident that we're not breaking someone that used to work by increasing the drive strength here. How much has this been tested?
From further discussion internally, it sounds as if this should be fine and fixes more than just this one eMMC part. Thus: Reviewed-by: Douglas Anderson <dianders@chromium.org>