[PATCH 1/5] pinctrl: sun6i: Add some missing functions, fix i2c3 muxing

[maxime.ripard@free-electrons.com (Maxime Ripard)]

On Wed, Nov 26, 2014 at 09:30:40AM +0100, Hans de Goede wrote:
> Hi,
> 
> On 11/25/2014 07:04 PM, Maxime Ripard wrote:
> >Hi,
> >
> >On Sun, Nov 23, 2014 at 01:54:39PM +0100, Hans de Goede wrote:
> >>While working on pinctrl for the A31s, I noticed that function 4 of
> >>PA15 - PA18 was missing, add these.
> >>
> >>I also noticed that i2c3 sck / sda got assigned to PB5 & PB6, this should
> >>be PB4 & PB5, fix this as well.
> >>
> >>Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> >>---
> >>  drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c | 9 +++++++--
> >>  1 file changed, 7 insertions(+), 2 deletions(-)
> >>
> >>diff --git a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c
> >>index a2b4b85..fb19e15 100644
> >>--- a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c
> >>+++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c
> >>@@ -134,24 +134,28 @@ static const struct sunxi_desc_pin sun6i_a31_pins[] = {
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "gmac"),		/* RXD4 */
> >>  		  SUNXI_FUNCTION(0x3, "lcd1"),		/* D15 */
> >>+		  SUNXI_FUNCTION(0x4, "clk_a_out"),
> >
> >It's called clk_out_a on the A20, I'd rather stick with the same
> >scheme here.
> 
> Will fix.
> 
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 15)),	/* PA_EINT15 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 16),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "gmac"),		/* RXD5 */
> >>  		  SUNXI_FUNCTION(0x3, "lcd1"),		/* D16 */
> >>+		  SUNXI_FUNCTION(0x4, "dmic"),		/* CLK */
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 16)),	/* PA_EINT16 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 17),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "gmac"),		/* RXD6 */
> >>  		  SUNXI_FUNCTION(0x3, "lcd1"),		/* D17 */
> >>+		  SUNXI_FUNCTION(0x4, "dmic"),		/* DIN */
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 17)),	/* PA_EINT17 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 18),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "gmac"),		/* RXD7 */
> >>  		  SUNXI_FUNCTION(0x3, "lcd1"),		/* D18 */
> >>+		  SUNXI_FUNCTION(0x4, "clk_b_out"),
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 18)),	/* PA_EINT18 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 19),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>@@ -207,6 +211,7 @@ static const struct sunxi_desc_pin sun6i_a31_pins[] = {
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "gmac"),		/* MDC */
> >>  		  SUNXI_FUNCTION(0x3, "lcd1"),		/* HSYNC */
> >>+		  SUNXI_FUNCTION(0x4, "clk_c_out"),
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 26)),	/* PA_EINT26 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(A, 27),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>@@ -242,20 +247,20 @@ static const struct sunxi_desc_pin sun6i_a31_pins[] = {
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "i2s0"),		/* DO1 */
> >>  		  SUNXI_FUNCTION(0x3, "uart3"),		/* RTS */
> >>+		  SUNXI_FUNCTION(0x4, "i2c3"),		/* SCK */
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 4)),	/* PB_EINT4 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 5),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "i2s0"),		/* DO2 */
> >>  		  SUNXI_FUNCTION(0x3, "uart3"),		/* TX */
> >>-		  SUNXI_FUNCTION(0x4, "i2c3"),		/* SCK */
> >>+		  SUNXI_FUNCTION(0x4, "i2c3"),		/* SDA */
> >>  		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 5)),	/* PB_EINT5 */
> >>  	SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 6),
> >>  		  SUNXI_FUNCTION(0x0, "gpio_in"),
> >>  		  SUNXI_FUNCTION(0x1, "gpio_out"),
> >>  		  SUNXI_FUNCTION(0x2, "i2s0"),		/* DO3 */
> >>  		  SUNXI_FUNCTION(0x3, "uart3"),		/* RX */
> >>-		  SUNXI_FUNCTION(0x4, "i2c3"),		/* SDA */
> >
> >Where did you get that info from? The datasheet still reports that
> >information.
> 
> I assume with the datasheet you mean "A31 User Manual V1.20.pdf", which
> was last updated on September 20, 2013. I did not check that one, now I
> see where the original pinctrl code from.
>
> So I've done some more digging:
> 
> "A31 Datasheet - v1.00 (2012-12-24).pdf" also has twi3 sck / sda on pin
> PB5 / PB6 like the current pinctrl code.
> 
> But "A31 Datasheet V1.40.pdf" which has the following in its revision log:
> "1.4 Dec 10,2013 Modify Pin Description"
> 
> Moves them to PB4 / PB5 and that is where I got this from (and was the only
> place I initially looked), I think that this is an intentional change, and
> that PB4 / PB5 are the correct pins.

Funny, I was looking at the A31 datasheet v1.4 from 10/12/2013 that is
in the allwinner's repo, and that's where I got this from (or some
earlier version of it)

https://github.com/allwinner-zh/documents/blob/master/A31/A31%20datasheet%20V1.4%2020131210.pdf

Something's weird here :)

> I will ask Allwinner which is correct, so that we know for sure.

Yep, I saw that, thanks for clearing that up.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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