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ARM: kirkwood: Convert the mplcec4 board to pinctrl

Stefan Peter linux-arm-kernel 1 version New

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Cover letter [PATCH 0/1] ARM: kirkwood: Convert the mplcec4 board to pinctrl

Hello Andrew

Am 19.11.2012 12:18, schrieb Andrew Lunn:

Quoted 22 lines · Stefan Peter
Quoted 5 lines

Hello Andrew

This is my try to convert the mplcec4 board to your pinctrl patches. The only problem I see is that I get an uart1 using mpp13 and mpp14 which are used by the mvsdio driver

Hi Stefan

Interesting.

If you convert the dtb back to a dtc:

dtc -o mplcec4.dts -O dts arch/arm/boot/kirkwood-mplcec4.dtb

you see:

		pinctrl at 10000 {

		};
	};
Quoted 5 lines

pmx-uart1 has no linux.phandle, and its not listed in

pinctrl-0 = <0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xa 0xb 0xc 0xd>;

so it should not be used as a pin hog.

Exactly.

Quoted 5 lines

So, during boot do you see:

f1012100.serial: ttyS1 at MMIO 0xf1012100 (irq = 34) is a 16550A

No

Quoted 9 lines

What do you see in /debug/pinctrl/f1010000.pinctrl/pinmux-pins contain?

Since i have a second UART on my board i have:

pin 13 (PIN13): f1010000.pinctrl (GPIO UNCLAIMED) (HOG) function uart1 group mpp13 pin 14 (PIN14): f1010000.pinctrl (GPIO UNCLAIMED) (HOG) function uart1 group mpp14

but i would expect to see function sdio.

No, I see

pin 12 (PIN12): (MUX UNCLAIMED) (GPIO UNCLAIMED) pin 13 (PIN13): (MUX UNCLAIMED) (GPIO UNCLAIMED) pin 14 (PIN14): (MUX UNCLAIMED) (GPIO UNCLAIMED) pin 15 (PIN15): (MUX UNCLAIMED) (GPIO UNCLAIMED) pin 16 (PIN16): (MUX UNCLAIMED) (GPIO UNCLAIMED) pin 17 (PIN17): (MUX UNCLAIMED) (GPIO UNCLAIMED)

However, there is a phandle in pinctrl at 10000/pmx-sdio/

Quoted 4 lines

Thanks
Andrew

Regards

Stefan Peter

Signature · 2 lines
MPL AG, Switzerland                     http://www.mpl.ch
Tel. +41 (0)56 483 34 34          Fax: +41(0)56 493 30 20

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