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pinctrl: artpec6: dt: add smaller groups for uarts 

Add group configuration for uarts that are cut down
variants, the standard being full, i.e. all signals,
flow control, i.e. rx/tx and cts/rts, and rx/tx only.

This allows us to be more precise in which pins we're
actually using.

Unfortunately the existing naming scheme leaves things
to be desired, e.g. uart3grp0 means RX/TX and CTS/RTS,
yet uart0grp0 means all pins.
Since the exising suffixes have different meaning for
different uarts, and the fact that we cannot change
the name of existing groups, makes it hard to use a
descriptive name for the newly added groups.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Niklas Cassel 2018-02-22 16:22:47 +01:00 committed by Linus Walleij
parent 7e065fb9cc
commit 928af22477
1 changed files with 8 additions and 7 deletions
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15
Documentation/devicetree/bindings/pinctrl/axis,artpec6-pinctrl.txt
View File

@ -19,8 +19,9 @@ Required subnode-properties:
Available functions and groups (function: group0, group1...):
gpio: cpuclkoutgrp0, udlclkoutgrp0, i2c1grp0, i2c2grp0,
i2c3grp0, i2s0grp0, i2s1grp0, i2srefclkgrp0, spi0grp0,
spi1grp0, pciedebuggrp0, uart0grp0, uart0grp1, uart1grp0,
uart2grp0, uart2grp1, uart3grp0, uart4grp0, uart5grp0,
spi1grp0, pciedebuggrp0, uart0grp0, uart0grp1, uart0grp2,
uart1grp0, uart1grp1, uart2grp0, uart2grp1, uart2grp2,
uart3grp0, uart4grp0, uart4grp1, uart5grp0, uart5grp1,
uart5nocts
cpuclkout: cpuclkoutgrp0
udlclkout: udlclkoutgrp0
@ -33,12 +34,12 @@ Required subnode-properties:
spi0: spi0grp0
spi1: spi1grp0
pciedebug: pciedebuggrp0
uart0: uart0grp0, uart0grp1
uart1: uart1grp0
uart2: uart2grp0, uart2grp1
uart0: uart0grp0, uart0grp1, uart0grp2
uart1: uart1grp0, uart1grp1
uart2: uart2grp0, uart2grp1, uart2grp2
uart3: uart3grp0
uart4: uart4grp0
uart5: uart5grp0, uart5nocts
uart4: uart4grp0, uart4grp1
uart5: uart5grp0, uart5grp1, uart5nocts
nand: nandgrp0
sdio0: sdio0grp0
sdio1: sdio1grp0