Subject: [PATCH] ARM: at91/dt: split sam9x5 peripheral definitions

From: [email-masked] (Mike Turquette)
Date: Tue, 20 Aug 2013 15:36:51 -0700

Quoting b.brezillon at overkiz.com (2013-08-19 23:00:32)
> Hello Mike,
> 
> On Mon, 19 Aug 2013 15:37:14 -0700, Mike Turquette
> <[email-masked]> wrote:
> > Quoting Nicolas Ferre (2013-08-19 09:23:46)
> >> On 08/08/2013 17:23, boris brezillon :
> >> > Hello Jean-Christophe,
> >> >
> >> > On 08/08/2013 16:07, Jean-Christophe PLAGNIOL-VILLARD wrote:
> >> >> On 12:14 Wed 07 Aug     , Boris BREZILLON wrote:
> >> >>> This patch splits the sam9x5 peripheral definitions into:
> >> >>> - a common base for all sam9x5 SoCs (at91sam9x5.dtsi)
> >> >>> - several optional peripheral definitions which will be included by specific
> >> >>>     sam9x5 SoCs (at91sam9x5_'periph name'.dtsi)
> >> >>>
> >> >>> This provides a better representation of the real hardware (drop unneeded
> >> >>> dt nodes) and avoids future peripheral id conflict (lcdc and isi both use
> >> >>> peripheral id 25).
> >> >> I really don't like this
> >> >>
> >> >> the mapping is soc specific (here familly) so I does not see any advantage
> >> >> except move files so NO for me
> >> > Let me explain in detail why I did that.
> >> >
> >> > This separation was part of the "at91 common clk" series and was here to
> >> > avoid the
> >> > definition of unavailable clocks or definition of clocks with the same
> >> > id (which may result
> >> > in bad clk registration).
> >> > If we keep all the definitions in one .dtsi file (even the one which are
> >> > not really available),
> >> > I may need to add a new property to each peripheral (and system) clk
> >> > node to specify the
> >> > availabilty of the clock (something similar to 'status="disabled"' in
> >> > device nodes).
> >>
> >> This is indeed a pretty good argument.
> >> I do think that we have to ask Mike Turquette to see if he already has
> >> encountered such a case.
> > 
> > It is correct to place chip-specific clocks into a chip-specific dts.
> > Having clocks marked as "disabled" in a big dtsi is not the right way to
> > go.
> > 
> 
> I agree. As I said earlier, I think unavailable peripherals (and
> associated clocks)
> should not be part of the dts definition because it may lead to
> misinterpretation of
> the real hardware parts.
> There is a difference between unused IP block (defined with
> status="disabled") because
> external I/Os are not connected on a specific board and unavailable IP
> block (IP block
> not available on a given SoC).
> 
> This beeing said, I understand the readability concern, and I won't
> force this split if
> we find a way to declare a clk as "unavailable" or "disabled"  

The readability concern is a small one. Basically you've broken these
peripherals out into separate dts and then you reference them from the
boards/platforms that have them. That sounds very sane to me. The
alternative would be to copy/paste these peripheral nodes into each dts
file that needs them, but that isn't a very maintainable idea (e.g.
propagating bug fixes across every file, etc).

In short I think the series is good.

> 
> > Regarding naming conflicts, is your issue with string name collisions
> > during calls to __clk_lookup?
> > 
> 
> No, there is no collision in clk names, because each optional clock has
> a unique name.
> But there may be conflicts on clk ids (peripheral ids):
> 
> LCDC (LCD Controller) and ISI (Image Sensor Interface) peripherals have
> the same id (25)
> in sam9x5 SoC family but are never both available in a given SoC.
> 
> If you declare LCDC clk before ISI clock, the former will always be
> returned when you
> reference the ISI clk in ISI peripheral node (clocks=<&periph 25>).
> 
> This will work, as the method for enabling/disabling periph clk are the
> same for all clks.
> But when you print the clk tree (using debugfs) you will see lcdc_clk
> with prepare/enable
> count incremented and isi_clk always unused, even if the SoC does not
> have an LCDC block.
> 
> Moreover, isi_clk will be allocated for nothing, because it cannot be
> retrieved.
> 
> And what happens if an unavailable clock is referenced (I did not test
> that, but I guess
> the is_enabled callback will always return false)?
> This case should not happen if the dts is correctly defined, but still,
> I think unavailable
> clocks should not be registered in the clk framework.

How do you define an "unavailable" clock? The common clock binding
doesn't have any info on interpreting the standard "status" property, if
that is what you mean.

I think that we should not define unavailable clocks.

Regards,
Mike

> 
> Please, feel free to share your thoughts.
> 
> Best Regards,
> 
> Boris
> 
> > Thanks,
> > Mike
> > 
> >>
> >> I must say that I was not in favor for this split because of readability
> >> and dts/dtsi file organization (you know, the usual question: where the
> >> hell this peripheral property is finally setup?).
> >>
> >> But, if we really have to implement a new kind of property to tell if a
> >> clock is actually present or not, I am in favor for reconsidering this
> >> solution as it seems quite simple and self-explanatory...
> >>
> >> > As explained to Thomas, I thought device tree was here to give a real
> >> > description of the
> >> > hardware parts (in case of sam9x5.dtsi the description of the common
> >> > parts of sam9x5 SoC
> >> > family).
> >> > If you define peripherals that are not present in a SoC (lets say macb0
> >> > for sam9g15) you break
> >> > this rule.
> >>
> >> Well, on the other hand, the status says "disabled", so we can imagine
> >> that it has been disabled, from its birth, in hardware...
> >>
> >> > I'm not telling I have the right approach here, I'm just trying to
> >> > understand what should be done and
> >> > what should not.
> >> >
> >> > Finally, I'd like to point that the memory footprint of the dtb file
> >> > generated after this patch has been
> >> > applied is bit smaller (even if it won't make a real difference):
> >> >
> >> > with this patch:
> >> >
> >> > 15937 arch/arm/boot/dts/at91-ariag25.dtb
> >> > 15860 arch/arm/boot/dts/at91sam9g15ek.dtb
> >> > 16905 arch/arm/boot/dts/at91sam9g25ek.dtb
> >> > 16473 arch/arm/boot/dts/at91sam9g35ek.dtb
> >> > 17341 arch/arm/boot/dts/at91sam9x25ek.dtb
> >> > 16473 arch/arm/boot/dts/at91sam9x35ek.dtb
> >> >
> >> > without this patch:
> >> >
> >> > 16077 arch/arm/boot/dts/at91-ariag25.dtb
> >> > 16824 arch/arm/boot/dts/at91sam9g15ek.dtb
> >> > 16849 arch/arm/boot/dts/at91sam9g25ek.dtb
> >> > 16849 arch/arm/boot/dts/at91sam9g35ek.dtb
> >> > 15017 arch/arm/boot/dts/at91sam9m10g45ek.dtb
> >> > 17145 arch/arm/boot/dts/at91sam9x25ek.dtb
> >> > 16849 arch/arm/boot/dts/at91sam9x35ek.dtb
> >>
> >> okay, but difference in size are not impressive. But it is true that:
> >> - it can grow a little if we switch LCD to full DT
> >> - each bit saved can have an influence on boot time
> >> but it will not be a decisive factor.
> >>
> >>
> >> >> Best Regards,
> >> >> J.
> >> >>> Signed-off-by: Boris BREZILLON <[email-masked]>
> >> >>> ---
> >> >>>    arch/arm/boot/dts/at91sam9g25.dtsi       |    2 +
> >> >>>    arch/arm/boot/dts/at91sam9g35.dtsi       |    1 +
> >> >>>    arch/arm/boot/dts/at91sam9x25.dtsi       |   24 ++---------
> >> >>>    arch/arm/boot/dts/at91sam9x35.dtsi       |    1 +
> >> >>>    arch/arm/boot/dts/at91sam9x5.dtsi        |   67 ------------------------------
> >> >>>    arch/arm/boot/dts/at91sam9x5_macb0.dtsi  |   56 +++++++++++++++++++++++++
> >> >>>    arch/arm/boot/dts/at91sam9x5_macb1.dtsi  |   44 ++++++++++++++++++++
> >> >>>    arch/arm/boot/dts/at91sam9x5_usart3.dtsi |   51 +++++++++++++++++++++++
> >> >>>    8 files changed, 158 insertions(+), 88 deletions(-)
> >> >>>    create mode 100644 arch/arm/boot/dts/at91sam9x5_macb0.dtsi
> >> >>>    create mode 100644 arch/arm/boot/dts/at91sam9x5_macb1.dtsi
> >> >>>    create mode 100644 arch/arm/boot/dts/at91sam9x5_usart3.dtsi
> >> >>>
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9g25.dtsi b/arch/arm/boot/dts/at91sam9g25.dtsi
> >> >>> index b4ec6fe..17b8799 100644
> >> >>> --- a/arch/arm/boot/dts/at91sam9g25.dtsi
> >> >>> +++ b/arch/arm/boot/dts/at91sam9g25.dtsi
> >> >>> @@ -7,6 +7,8 @@
> >> >>>     */
> >> >>>
> >> >>>    #include "at91sam9x5.dtsi"
> >> >>> +#include "at91sam9x5_usart3.dtsi"
> >> >>> +#include "at91sam9x5_macb0.dtsi"
> >> >>>
> >> >>>    / {
> >> >>>     model = "Atmel AT91SAM9G25 SoC";
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9g35.dtsi b/arch/arm/boot/dts/at91sam9g35.dtsi
> >> >>> index bebf9f5..e35c2fc 100644
> >> >>> --- a/arch/arm/boot/dts/at91sam9g35.dtsi
> >> >>> +++ b/arch/arm/boot/dts/at91sam9g35.dtsi
> >> >>> @@ -7,6 +7,7 @@
> >> >>>     */
> >> >>>
> >> >>>    #include "at91sam9x5.dtsi"
> >> >>> +#include "at91sam9x5_macb0.dtsi"
> >> >>>
> >> >>>    / {
> >> >>>     model = "Atmel AT91SAM9G35 SoC";
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9x25.dtsi b/arch/arm/boot/dts/at91sam9x25.dtsi
> >> >>> index 49e94ab..c255421 100644
> >> >>> --- a/arch/arm/boot/dts/at91sam9x25.dtsi
> >> >>> +++ b/arch/arm/boot/dts/at91sam9x25.dtsi
> >> >>> @@ -7,6 +7,9 @@
> >> >>>     */
> >> >>>
> >> >>>    #include "at91sam9x5.dtsi"
> >> >>> +#include "at91sam9x5_usart3.dtsi"
> >> >>> +#include "at91sam9x5_macb0.dtsi"
> >> >>> +#include "at91sam9x5_macb1.dtsi"
> >> >>>
> >> >>>    / {
> >> >>>     model = "Atmel AT91SAM9X25 SoC";
> >> >>> @@ -22,27 +25,6 @@
> >> >>>                                    0x80000000 0xfffd0000 0xb83fffff  /* pioC */
> >> >>>                                    0x003fffff 0x003f8000 0x00000000  /* pioD */
> >> >>>                                   >;
> >> >>> -
> >> >>> -                           macb1 {
> >> >>> -                                   pinctrl_macb1_rmii: macb1_rmii-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOC 16 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC16 periph B */
> >> >>> -                                                    AT91_PIOC 18 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC18 periph B */
> >> >>> -                                                    AT91_PIOC 19 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC19 periph B */
> >> >>> -                                                    AT91_PIOC 20 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC20 periph B */
> >> >>> -                                                    AT91_PIOC 21 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC21 periph B */
> >> >>> -                                                    AT91_PIOC 27 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC27 periph B */
> >> >>> -                                                    AT91_PIOC 28 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC28 periph B */
> >> >>> -                                                    AT91_PIOC 29 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC29 periph B */
> >> >>> -                                                    AT91_PIOC 30 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC30 periph B */
> >> >>> -                                                    AT91_PIOC 31 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC31 periph B */
> >> >>> -                                   };
> >> >>> -                           };
> >> >>> -                   };
> >> >>> -
> >> >>> -                   macb1: ethernet at f8030000 {
> >> >>> -                           pinctrl-names = "default";
> >> >>> -                           pinctrl-0 = <&pinctrl_macb1_rmii>;
> >> >>>                     };
> >> >>>             };
> >> >>>     };
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9x35.dtsi b/arch/arm/boot/dts/at91sam9x35.dtsi
> >> >>> index 1a3d525..8eac66c 100644
> >> >>> --- a/arch/arm/boot/dts/at91sam9x35.dtsi
> >> >>> +++ b/arch/arm/boot/dts/at91sam9x35.dtsi
> >> >>> @@ -7,6 +7,7 @@
> >> >>>     */
> >> >>>
> >> >>>    #include "at91sam9x5.dtsi"
> >> >>> +#include "at91sam9x5_macb0.dtsi"
> >> >>>
> >> >>>    / {
> >> >>>     model = "Atmel AT91SAM9X35 SoC";
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
> >> >>> index 57d45f5..05f4c74 100644
> >> >>> --- a/arch/arm/boot/dts/at91sam9x5.dtsi
> >> >>> +++ b/arch/arm/boot/dts/at91sam9x5.dtsi
> >> >>> @@ -206,29 +206,6 @@
> >> >>>                                     };
> >> >>>                             };
> >> >>>
> >> >>> -                           usart3 {
> >> >>> -                                   pinctrl_usart3: usart3-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOC 22 AT91_PERIPH_B AT91_PINCTRL_PULL_UP        /* PC22 periph B with pullup */
> >> >>> -                                                    AT91_PIOC 23 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC23 periph B */
> >> >>> -                                   };
> >> >>> -
> >> >>> -                                   pinctrl_usart3_rts: usart3_rts-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOC 24 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC24 periph B */
> >> >>> -                                   };
> >> >>> -
> >> >>> -                                   pinctrl_usart3_cts: usart3_cts-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOC 25 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC25 periph B */
> >> >>> -                                   };
> >> >>> -
> >> >>> -                                   pinctrl_usart3_sck: usart3_sck-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOC 26 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC26 periph B */
> >> >>> -                                   };
> >> >>> -                           };
> >> >>> -
> >> >>>                             uart0 {
> >> >>>                                     pinctrl_uart0: uart0-0 {
> >> >>>                                             atmel,pins =
> >> >>> @@ -277,34 +254,6 @@
> >> >>>                                     };
> >> >>>                             };
> >> >>>
> >> >>> -                           macb0 {
> >> >>> -                                   pinctrl_macb0_rmii: macb0_rmii-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOB 0 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB0 periph A */
> >> >>> -                                                    AT91_PIOB 1 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB1 periph A */
> >> >>> -                                                    AT91_PIOB 2 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB2 periph A */
> >> >>> -                                                    AT91_PIOB 3 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB3 periph A */
> >> >>> -                                                    AT91_PIOB 4 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB4 periph A */
> >> >>> -                                                    AT91_PIOB 5 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB5 periph A */
> >> >>> -                                                    AT91_PIOB 6 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB6 periph A */
> >> >>> -                                                    AT91_PIOB 7 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB7 periph A */
> >> >>> -                                                    AT91_PIOB 9 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB9 periph A */
> >> >>> -                                                    AT91_PIOB 10 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PB10 periph A */
> >> >>> -                                   };
> >> >>> -
> >> >>> -                                   pinctrl_macb0_rmii_mii: macb0_rmii_mii-0 {
> >> >>> -                                           atmel,pins =
> >> >>> -                                                   <AT91_PIOB 8 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB8 periph A */
> >> >>> -                                                    AT91_PIOB 11 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB11 periph A */
> >> >>> -                                                    AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB12 periph A */
> >> >>> -                                                    AT91_PIOB 13 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB13 periph A */
> >> >>> -                                                    AT91_PIOB 14 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB14 periph A */
> >> >>> -                                                    AT91_PIOB 15 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB15 periph A */
> >> >>> -                                                    AT91_PIOB 16 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB16 periph A */
> >> >>> -                                                    AT91_PIOB 17 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PB17 periph A */
> >> >>> -                                   };
> >> >>> -                           };
> >> >>> -
> >> >>>                             mmc0 {
> >> >>>                                     pinctrl_mmc0_slot0_clk_cmd_dat0: mmc0_slot0_clk_cmd_dat0-0 {
> >> >>>                                             atmel,pins =
> >> >>> @@ -605,22 +554,6 @@
> >> >>>                             status = "disabled";
> >> >>>                     };
> >> >>>
> >> >>> -                   macb0: ethernet at f802c000 {
> >> >>> -                           compatible = "cdns,at32ap7000-macb", "cdns,macb";
> >> >>> -                           reg = <0xf802c000 0x100>;
> >> >>> -                           interrupts = <24 IRQ_TYPE_LEVEL_HIGH 3>;
> >> >>> -                           pinctrl-names = "default";
> >> >>> -                           pinctrl-0 = <&pinctrl_macb0_rmii>;
> >> >>> -                           status = "disabled";
> >> >>> -                   };
> >> >>> -
> >> >>> -                   macb1: ethernet at f8030000 {
> >> >>> -                           compatible = "cdns,at32ap7000-macb", "cdns,macb";
> >> >>> -                           reg = <0xf8030000 0x100>;
> >> >>> -                           interrupts = <27 IRQ_TYPE_LEVEL_HIGH 3>;
> >> >>> -                           status = "disabled";
> >> >>> -                   };
> >> >>> -
> >> >>>                     i2c0: i2c at f8010000 {
> >> >>>                             compatible = "atmel,at91sam9x5-i2c";
> >> >>>                             reg = <0xf8010000 0x100>;
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9x5_macb0.dtsi b/arch/arm/boot/dts/at91sam9x5_macb0.dtsi
> >> >>> new file mode 100644
> >> >>> index 0000000..55731ff
> >> >>> --- /dev/null
> >> >>> +++ b/arch/arm/boot/dts/at91sam9x5_macb0.dtsi
> >> >>> @@ -0,0 +1,56 @@
> >> >>> +/*
> >> >>> + * at91sam9x5_macb0.dtsi - Device Tree Include file for AT91SAM9x5 SoC with 1
> >> >>> + * Ethernet interface.
> >> >>> + *
> >> >>> + * Copyright (C) 2013 Boris BREZILLON <[email-masked]>
> >> >>> + *
> >> >>> + * Licensed under GPLv2.
> >> >>> + */
> >> >>> +
> >> >>> +#include <dt-bindings/pinctrl/at91.h>
> >> >>> +#include <dt-bindings/interrupt-controller/irq.h>
> >> >>> +
> >> >>> +/ {
> >> >>> +   ahb {
> >> >>> +           apb {
> >> >>> +                   pinctrl at fffff400 {
> >> >>> +                           macb0 {
> >> >>> +                                   pinctrl_macb0_rmii: macb0_rmii-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOB 0 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB0 periph A */
> >> >>> +                                                    AT91_PIOB 1 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB1 periph A */
> >> >>> +                                                    AT91_PIOB 2 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB2 periph A */
> >> >>> +                                                    AT91_PIOB 3 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB3 periph A */
> >> >>> +                                                    AT91_PIOB 4 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB4 periph A */
> >> >>> +                                                    AT91_PIOB 5 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB5 periph A */
> >> >>> +                                                    AT91_PIOB 6 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB6 periph A */
> >> >>> +                                                    AT91_PIOB 7 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB7 periph A */
> >> >>> +                                                    AT91_PIOB 9 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB9 periph A */
> >> >>> +                                                    AT91_PIOB 10 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PB10 periph A */
> >> >>> +                                   };
> >> >>> +
> >> >>> +                                   pinctrl_macb0_rmii_mii: macb0_rmii_mii-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOB 8 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PB8 periph A */
> >> >>> +                                                    AT91_PIOB 11 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB11 periph A */
> >> >>> +                                                    AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB12 periph A */
> >> >>> +                                                    AT91_PIOB 13 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB13 periph A */
> >> >>> +                                                    AT91_PIOB 14 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB14 periph A */
> >> >>> +                                                    AT91_PIOB 15 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB15 periph A */
> >> >>> +                                                    AT91_PIOB 16 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB16 periph A */
> >> >>> +                                                    AT91_PIOB 17 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PB17 periph A */
> >> >>> +                                   };
> >> >>> +                           };
> >> >>> +                   };
> >> >>> +
> >> >>> +                   macb0: ethernet at f802c000 {
> >> >>> +                           compatible = "cdns,at32ap7000-macb", "cdns,macb";
> >> >>> +                           reg = <0xf802c000 0x100>;
> >> >>> +                           interrupts = <24 IRQ_TYPE_LEVEL_HIGH 3>;
> >> >>> +                           pinctrl-names = "default";
> >> >>> +                           pinctrl-0 = <&pinctrl_macb0_rmii>;
> >> >>> +                           status = "disabled";
> >> >>> +                   };
> >> >>> +           };
> >> >>> +   };
> >> >>> +};
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9x5_macb1.dtsi b/arch/arm/boot/dts/at91sam9x5_macb1.dtsi
> >> >>> new file mode 100644
> >> >>> index 0000000..77425a6
> >> >>> --- /dev/null
> >> >>> +++ b/arch/arm/boot/dts/at91sam9x5_macb1.dtsi
> >> >>> @@ -0,0 +1,44 @@
> >> >>> +/*
> >> >>> + * at91sam9x5_macb1.dtsi - Device Tree Include file for AT91SAM9x5 SoC with 2
> >> >>> + * Ethernet interfaces.
> >> >>> + *
> >> >>> + * Copyright (C) 2013 Boris BREZILLON <[email-masked]>
> >> >>> + *
> >> >>> + * Licensed under GPLv2.
> >> >>> + */
> >> >>> +
> >> >>> +#include <dt-bindings/pinctrl/at91.h>
> >> >>> +#include <dt-bindings/interrupt-controller/irq.h>
> >> >>> +
> >> >>> +/ {
> >> >>> +   ahb {
> >> >>> +           apb {
> >> >>> +                   pinctrl at fffff400 {
> >> >>> +                           macb1 {
> >> >>> +                                   pinctrl_macb1_rmii: macb1_rmii-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOC 16 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC16 periph B */
> >> >>> +                                                    AT91_PIOC 18 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC18 periph B */
> >> >>> +                                                    AT91_PIOC 19 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC19 periph B */
> >> >>> +                                                    AT91_PIOC 20 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC20 periph B */
> >> >>> +                                                    AT91_PIOC 21 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC21 periph B */
> >> >>> +                                                    AT91_PIOC 27 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC27 periph B */
> >> >>> +                                                    AT91_PIOC 28 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC28 periph B */
> >> >>> +                                                    AT91_PIOC 29 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC29 periph B */
> >> >>> +                                                    AT91_PIOC 30 AT91_PERIPH_B AT91_PINCTRL_NONE   /* PC30 periph B */
> >> >>> +                                                    AT91_PIOC 31 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC31 periph B */
> >> >>> +                                   };
> >> >>> +                           };
> >> >>> +                   };
> >> >>> +
> >> >>> +                   macb1: ethernet at f8030000 {
> >> >>> +                           compatible = "cdns,at32ap7000-macb", "cdns,macb";
> >> >>> +                           reg = <0xf8030000 0x100>;
> >> >>> +                           interrupts = <27 IRQ_TYPE_LEVEL_HIGH 3>;
> >> >>> +                           pinctrl-names = "default";
> >> >>> +                           pinctrl-0 = <&pinctrl_macb1_rmii>;
> >> >>> +                           status = "disabled";
> >> >>> +                   };
> >> >>> +           };
> >> >>> +   };
> >> >>> +};
> >> >>> diff --git a/arch/arm/boot/dts/at91sam9x5_usart3.dtsi b/arch/arm/boot/dts/at91sam9x5_usart3.dtsi
> >> >>> new file mode 100644
> >> >>> index 0000000..5589579
> >> >>> --- /dev/null
> >> >>> +++ b/arch/arm/boot/dts/at91sam9x5_usart3.dtsi
> >> >>> @@ -0,0 +1,51 @@
> >> >>> +/*
> >> >>> + * at91sam9x5_lcdc.dtsi - Device Tree Include file for AT91SAM9x5 SoC with
> >> >>> + * 4 USART.
> >> >>> + *
> >> >>> + * Copyright (C) 2013 Boris BREZILLON <[email-masked]>
> >> >>> + *
> >> >>> + * Licensed under GPLv2.
> >> >>> + */
> >> >>> +
> >> >>> +#include <dt-bindings/pinctrl/at91.h>
> >> >>> +#include <dt-bindings/interrupt-controller/irq.h>
> >> >>> +
> >> >>> +/ {
> >> >>> +   ahb {
> >> >>> +           apb {
> >> >>> +                   pinctrl at fffff400 {
> >> >>> +                           usart3 {
> >> >>> +                                   pinctrl_usart3: usart3-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOC 22 AT91_PERIPH_B AT91_PINCTRL_PULL_UP        /* PC22 periph B with pullup */
> >> >>> +                                                    AT91_PIOC 23 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC23 periph B */
> >> >>> +                                   };
> >> >>> +
> >> >>> +                                   pinctrl_usart3_rts: usart3_rts-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOC 24 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC24 periph B */
> >> >>> +                                   };
> >> >>> +
> >> >>> +                                   pinctrl_usart3_cts: usart3_cts-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOC 25 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC25 periph B */
> >> >>> +                                   };
> >> >>> +
> >> >>> +                                   pinctrl_usart3_sck: usart3_sck-0 {
> >> >>> +                                           atmel,pins =
> >> >>> +                                                   <AT91_PIOC 26 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC26 periph B */
> >> >>> +                                   };
> >> >>> +                           };
> >> >>> +                   };
> >> >>> +
> >> >>> +                   usart3: serial at f8028000 {
> >> >>> +                           compatible = "atmel,at91sam9260-usart";
> >> >>> +                           reg = <0xf8028000 0x200>;
> >> >>> +                           interrupts = <8 IRQ_TYPE_LEVEL_HIGH 5>;
> >> >>> +                           pinctrl-names = "default";
> >> >>> +                           pinctrl-0 = <&pinctrl_usart3>;
> >> >>> +                           status = "disabled";
> >> >>> +                   };
> >> >>> +           };
> >> >>> +   };
> >> >>> +};
> >> >>> --
> >> >>> 1.7.9.5
> >> >>>
> >> >
> >> >
> >>
> >>
> >> --
> >> Nicolas Ferre