Messages in this thread | | | From | Linus Walleij <> | Date | Mon, 29 May 2017 14:25:11 +0200 | Subject | Re: [PATCH v2 1/4] pinctrl: rockchip: Add iomux-route switching support |
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On Fri, May 26, 2017 at 9:20 AM, David Wu <david.wu@rock-chips.com> wrote:
> On the some rockchip SOCS, some things like rk3399 specific uart2 can use > multiple pins. Somewhere between the pin io-cells and the uart it seems > to have some sort of switch to decide to which pin to actually route the > data. > > +-------+ +--------+ /- GPIO4_B0 (pinmux 2) > > | uart2 | -- | switch | --- GPIO4_C0 (pinmux 2) > > +-------+ +--------+ \- GPIO4_C3 (pinmux 2) > (switch selects one of the 3 pins base on the GRF_SOC_CON7[BIT0, BIT1]) > > The routing switch is determined by one pin of a specific group to be set > to its special pinmux function. If the pinmux setting is wrong for that > pin the ip block won't work correctly anyway. > > Signed-off-by: David Wu <david.wu@rock-chips.com>
Patch applied with Heiko's ACK.
Yours, Linus Walleij
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