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Date: Tue, 12 Mar 2019 14:01:42 +0100 From: Christoph Müllner <christoph.muellner@...obroma-systems.com> To: Heiko Stuebner <heiko@...ech.de> Cc: robh+dt@...nel.org, mark.rutland@....com, shawn.lin@...k-chips.com, Philipp Tomsich <philipp.tomsich@...obroma-systems.com>, Kishon Vijay Abraham I <kishon@...com>, Brian Norris <briannorris@...omium.org>, Klaus Goger <klaus.goger@...obroma-systems.com>, Enric Balletbo i Serra <enric.balletbo@...labora.com>, Douglas Anderson <dianders@...omium.org>, Viresh Kumar <viresh.kumar@...aro.org>, Ezequiel Garcia <ezequiel@...labora.com>, Lin Huang <hl@...k-chips.com>, Randy Li <ayaka@...lik.info>, Tony Xie <tony.xie@...k-chips.com>, Vicente Bergas <vicencb@...il.com>, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org Subject: Re: [PATCH v2 2/4] dt-bindings: phy: Add a new property drive-impedance-ohm for RK's emmc PHY > On 12.03.2019, at 13:52, Heiko Stuebner <heiko@...ech.de> wrote: > > Hi Christoph, > > Am Donnerstag, 7. März 2019, 09:41:54 CET schrieb Christoph Muellner: >> This patch documents the new proprty drive-impedance-ohm for >> Rockchip's eMMC PHY node. >> >> Signed-off-by: Christoph Muellner <christoph.muellner@...obroma-systems.com> >> Signed-off-by: Philipp Tomsich <philipp.tomsich@...obroma-systems.com> >> --- >> Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt >> index e3ea55763b0a..5f5d999dacc3 100644 >> --- a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt >> +++ b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt >> @@ -13,6 +13,9 @@ specified by name: > > you might want to adapt the section headline as well, as right now it > talks about "Optional clocks", but should likely become the generic > "Optional properties" as in other bindings (including moving the clock- > binding.txt reference down into the clock elements) Thank's for spotting this. Will do for v3. Thanks, Christoph > > > Heiko > >> (because most boards can get basic functionality without having >> access to it), it is strongly suggested. >> - clocks: Should have a phandle to the card clock exported by the SDHCI driver. >> + - drive-impedance-ohm: Specifies the drive impedance in Ohm. >> + Possible values are 33, 40, 50, 66 and 100. >> + If not set, the default value of 50 will be applied. >> >> Example: >> >> > > > >
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