[PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Kuninori Morimoto]

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v5 -> v7

 - based on Gen3 v7 patch-set

 arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
index cdfc4c9..2742fc2 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
@@ -38,6 +38,23 @@
        };
 };
 
+&pfc {
+	usb0_pins: usb0 {
+		renesas,groups = "usb0";
+		renesas,function = "usb0";
+	};
+
+	usb1_pins: usb1 {
+		renesas,groups = "usb1";
+		renesas,function = "usb1";
+	};
+
+	usb2_pins: usb2 {
+		renesas,groups = "usb2";
+		renesas,function = "usb2";
+	};
+};
+
 &scif2 {
 	pinctrl-0 = <&scif2_pins>;
 	pinctrl-names = "default";
-- 
1.9.1

Re: [PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Geert Uytterhoeven]

Hi Morimoto-san, Shimoda-san,

On Mon, Aug 24, 2015 at 4:30 AM, Kuninori Morimoto
<kuninori.morimoto.gx@renesas.com> wrote:
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> index cdfc4c9..2742fc2 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> @@ -38,6 +38,23 @@
>         };
>  };
>
> +&pfc {

Please merge this with the "&pfc" section above.

> +       usb0_pins: usb0 {
> +               renesas,groups = "usb0";
> +               renesas,function = "usb0";
> +       };
> +
> +       usb1_pins: usb1 {
> +               renesas,groups = "usb1";
> +               renesas,function = "usb1";
> +       };
> +
> +       usb2_pins: usb2 {
> +               renesas,groups = "usb2";
> +               renesas,function = "usb2";
> +       };
> +};
> +
>  &scif2 {
>         pinctrl-0 = <&scif2_pins>;
>         pinctrl-names = "default";

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Geert Uytterhoeven]

Hi Shimoda-san, Morimoto-san, Kihara-san,

On Mon, Aug 24, 2015 at 4:30 AM, Kuninori Morimoto
<kuninori.morimoto.gx@renesas.com> wrote:
> From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

> --- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> @@ -38,6 +38,23 @@
>         };
>  };
>
> +&pfc {
> +       usb0_pins: usb0 {
> +               renesas,groups = "usb0";
> +               renesas,function = "usb0";
> +       };
> +
> +       usb1_pins: usb1 {
> +               renesas,groups = "usb1";
> +               renesas,function = "usb1";
> +       };
> +
> +       usb2_pins: usb2 {
> +               renesas,groups = "usb2";
> +               renesas,function = "usb2";
> +       };
> +};

If CONFIG_PINCTRL=y:

| sh-pfc e6060000.pfc: cannot locate data/mark enum_id for mark 2253
| phy_rcar_gen3_usb2 ee080200.usb-phy: Error applying setting, reverse
things back

mark 2253 = USB0_PWEN_MARK

I believe this is due to the IPSR16 section in the pinmux_data[] array in
drivers/pinctrl/sh-pfc/pfc-r8a7795.c lacking data for IP16_11_8.
Data for usb1 (IP16_19_16) and usb2 (IP15_3_0) is present.

Unfortunately my pinctrl foo is not strong enough to fill in the missing
pieces...

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Yoshihiro Shimoda]

Hi Geert-san,

(2015/08/26 23:26), Geert Uytterhoeven wrote:
> Hi Shimoda-san, Morimoto-san, Kihara-san,
> 
> On Mon, Aug 24, 2015 at 4:30 AM, Kuninori Morimoto
> <kuninori.morimoto.gx@renesas.com> wrote:
>> From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> 
>> --- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
>> +++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
>> @@ -38,6 +38,23 @@
>>         };
>>  };
>>
>> +&pfc {
>> +       usb0_pins: usb0 {
>> +               renesas,groups = "usb0";
>> +               renesas,function = "usb0";
>> +       };
>> +
>> +       usb1_pins: usb1 {
>> +               renesas,groups = "usb1";
>> +               renesas,function = "usb1";
>> +       };
>> +
>> +       usb2_pins: usb2 {
>> +               renesas,groups = "usb2";
>> +               renesas,function = "usb2";
>> +       };
>> +};
> 
> If CONFIG_PINCTRL=y:
> 
> | sh-pfc e6060000.pfc: cannot locate data/mark enum_id for mark 2253
> | phy_rcar_gen3_usb2 ee080200.usb-phy: Error applying setting, reverse
> things back
> 
> mark 2253 = USB0_PWEN_MARK
> 
> I believe this is due to the IPSR16 section in the pinmux_data[] array in
> drivers/pinctrl/sh-pfc/pfc-r8a7795.c lacking data for IP16_11_8.
> Data for usb1 (IP16_19_16) and usb2 (IP15_3_0) is present.
> 
> Unfortunately my pinctrl foo is not strong enough to fill in the missing
> pieces...

Thank you very much for the point.
I have ignored the error message because usb0 worked on my environment :)
However, we should fix it. And then, I found missing pieces for usb0 part as you mentioned.
If I applied the following patch, the error message disappeared and usb0 also worked.

So, Morimoto-san, if possible, would you merge this patch in v8?

Best regards,
Yoshihiro Shimoda

---
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
index 9437e87..1f60f4c 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
@@ -1335,6 +1335,19 @@ static const u16 pinmux_data[] = {
 	PINMUX_IPSR_DATA(IP15_31_28, SCK5),

 	/* IPSR16 */
+	PINMUX_IPSR_DATA(IP16_11_8, USB0_PWEN),
+	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, SIM0_RST_C, SEL_SIMCARD_2),
+	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, TS_SCK1_D, SEL_TSIF1_3),
+	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, STP_ISCLK_1_D, SEL_SSP1_1_3),
+	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, BPFCLK_B, SEL_FM_1),
+	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, RIF3_CLK_B, SEL_DRIF3_1),
+
+	PINMUX_IPSR_DATA(IP16_15_12, USB0_OVC),
+	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, SIM0_D_C, SEL_SIMCARD_2),
+	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, TS_SDAT1_D, SEL_TSIF1_3),
+	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, STP_ISD_1_D, SEL_SSP1_1_3),
+	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, RIF3_SYNC_B, SEL_DRIF3_1),
+
 	PINMUX_IPSR_DATA(IP16_19_16, USB1_PWEN),
 	PINMUX_IPSR_MODSEL_DATA(IP16_19_16, SIM0_CLK_C, SEL_SIMCARD_2),
 	PINMUX_IPSR_MODSEL_DATA(IP16_19_16, SSI_SCK1_A, SEL_SSI_0),

RE: [PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Yoshihiro Shimoda]

Hi Morimoto-san,

> Sent: Thursday, August 27, 2015 10:16 AM
< snip >
> So, Morimoto-san, if possible, would you merge this patch in v8?
> 
> Best regards,
> Yoshihiro Shimoda
> 
> ---
> diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
> index 9437e87..1f60f4c 100644
> --- a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
> +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
> @@ -1335,6 +1335,19 @@ static const u16 pinmux_data[] = {
>  	PINMUX_IPSR_DATA(IP15_31_28, SCK5),
> 
>  	/* IPSR16 */
> +	PINMUX_IPSR_DATA(IP16_11_8, USB0_PWEN),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, SIM0_RST_C, SEL_SIMCARD_2),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, TS_SCK1_D, SEL_TSIF1_3),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, STP_ISCLK_1_D, SEL_SSP1_1_3),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, BPFCLK_B, SEL_FM_1),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_11_8, RIF3_CLK_B, SEL_DRIF3_1),
> +
> +	PINMUX_IPSR_DATA(IP16_15_12, USB0_OVC),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, SIM0_D_C, SEL_SIMCARD_2),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, TS_SDAT1_D, SEL_TSIF1_3),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, STP_ISD_1_D, SEL_SSP1_1_3),
> +	PINMUX_IPSR_MODSEL_DATA(IP16_15_12, RIF3_SYNC_B, SEL_DRIF3_1),
> +
>  	PINMUX_IPSR_DATA(IP16_19_16, USB1_PWEN),
>  	PINMUX_IPSR_MODSEL_DATA(IP16_19_16, SIM0_CLK_C, SEL_SIMCARD_2),
>  	PINMUX_IPSR_MODSEL_DATA(IP16_19_16, SSI_SCK1_A, SEL_SSI_0),

Thank you for the point locally :)
Even if I don't add all the "PINMUX_IPSR_MODSEL_DATA" of usb0, it works correctly.
Since I didn't test the pins except USB0_{OVC,PWEN),
all the "PINMUX_IPSR_MODSEL_DATA" of usb0 should be removed.

Best regards,
Yoshihiro Shimoda

Re: [PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Geert Uytterhoeven]

Hi Shimoda-san,

On Thu, Aug 27, 2015 at 5:13 AM, Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
>> diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
>> index 9437e87..1f60f4c 100644
>> --- a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
>> +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
>> @@ -1335,6 +1335,19 @@ static const u16 pinmux_data[] = {
>>       PINMUX_IPSR_DATA(IP15_31_28, SCK5),
>>
>>       /* IPSR16 */
>> +     PINMUX_IPSR_DATA(IP16_11_8, USB0_PWEN),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_11_8, SIM0_RST_C, SEL_SIMCARD_2),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_11_8, TS_SCK1_D, SEL_TSIF1_3),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_11_8, STP_ISCLK_1_D, SEL_SSP1_1_3),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_11_8, BPFCLK_B, SEL_FM_1),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_11_8, RIF3_CLK_B, SEL_DRIF3_1),
>> +
>> +     PINMUX_IPSR_DATA(IP16_15_12, USB0_OVC),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_15_12, SIM0_D_C, SEL_SIMCARD_2),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_15_12, TS_SDAT1_D, SEL_TSIF1_3),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_15_12, STP_ISD_1_D, SEL_SSP1_1_3),
>> +     PINMUX_IPSR_MODSEL_DATA(IP16_15_12, RIF3_SYNC_B, SEL_DRIF3_1),
>> +
>>       PINMUX_IPSR_DATA(IP16_19_16, USB1_PWEN),
>>       PINMUX_IPSR_MODSEL_DATA(IP16_19_16, SIM0_CLK_C, SEL_SIMCARD_2),
>>       PINMUX_IPSR_MODSEL_DATA(IP16_19_16, SSI_SCK1_A, SEL_SSI_0),
>
> Thank you for the point locally :)
> Even if I don't add all the "PINMUX_IPSR_MODSEL_DATA" of usb0, it works correctly.

Because usb0 is the default function after bootup?

> Since I didn't test the pins except USB0_{OVC,PWEN),
> all the "PINMUX_IPSR_MODSEL_DATA" of usb0 should be removed.

You still want to describe the full pinctrl. Else dynamic reconfiguration
(e.g. by loading a DT overlay) from another function to usb0 will not work.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

RE: [PATCH 16/25 v7][RFC] arm64: renesas: salvator-x: add pfc node and subnodes for usb 2.0

[Yoshihiro Shimoda]

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