[PATCH v4] ARM: SPEAr600: Add device-tree support to SPEAr600 boards
Stefan Roese
sr at denx.de
Fri Mar 16 08:20:25 EDT 2012
On Friday 16 March 2012 12:50:22 Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 10:30 Fri 16 Mar , Stefan Roese wrote:
> > This patch adds a generic target for SPEAr600 board that can be
> > configured via the device-tree. Currently the following devices
> > are supported via the devicetree:
> >
> > - VIC interrupts
> > - PL011 UART
> > - PL061 GPIO
> > - Synopsys DW I2C
> > - Synopsys DW ethernet
> >
> > Other peripheral devices (e.g. SMI flash, FSMC NAND flash etc) will
> > follow in later patches.
>
> so drop USB, nand & co from the dtsi
>
> this will be add later when the binding will documentated and Acked
Okay. As I described in an earlier mail, I included those devices upon Arnd's
request. But I'll drop them for now in a new patch version.
> > Only the spear600-evb is currently supported. Other SPEAr600
> > based boards will follow later.
> >
> > Since the current mainline SPEAr600 code only supports the SPEAr600
> > evaluation board, with nearly zero peripheral devices (only UART
> > and GPIO), it makes sense to switch over to DT based configuration
> > completely now. So this patch also removes all non-DT stuff, mainly
> > platform device data. The files spear600.c and spear600_evb.c are
> > removed completely.
> >
> > Signed-off-by: Stefan Roese <sr at denx.de>
> > Cc: Viresh Kumar <viresh.kumar at st.com>
> > Cc: Arnd Bergmann <arnd at arndb.de>
> > Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> > ---
> > v4:
> > - Added memory node to all dts/dtsi files
> > - Reorganizes bus topology in the dtsi file, to match the
> >
> > real SoC layout
> >
> > v3:
> > - Removed non-DT SPEAr600 board support completely
> > - Removed OF_DEV_AUXDATA and changed clkdev instead, since we
> >
> > don't support non-DT targets any more
> >
> > - Changed gmac0 -> gmac etc for single instance devices in the
> >
> > dts
> >
> > - Added max memory size to memory node (instead of 0)
> > - Dropped mac-address property
> > - Removed some headers from spear6xx.c
> >
> > v2:
> > - Added DT support to spear6xx.c instead of creating board-dt.c
> > - Removed UART (PL011) and GPIO (PL061) platform data for
> >
> > devicetree board port. This works now via DT probing
> >
> > - Added OF_DEV_AUXDATA for clock device name matching for some
> >
> > device drivers
> >
> > - Removed sper600.c file completely
> > - Added DW I2C and ethernet nodes to the dts files
> > - Added other DT nodes (SMI, FSMC, ECHI, OHCI), currently disabled
> >
> > since the corresponding device drivers don't support DT probing
> >
> > - Removed Linaro/FSL copyright notice from SPEAr DT files (copy-paste
> > cruft) - Many smaller modification to the dts/dtsi files
> > - Changed Documentation/devicetree/bindings/arm/spear.txt to match
> >
> > the changed bindings
> >
> > Documentation/devicetree/bindings/arm/spear.txt | 8 ++
> > arch/arm/boot/dts/spear600-evb.dts | 37 +++++
> > arch/arm/boot/dts/spear600.dtsi | 170
> > +++++++++++++++++++++++ arch/arm/mach-spear6xx/Kconfig
> > | 7 +-
> > arch/arm/mach-spear6xx/Makefile | 6 -
> > arch/arm/mach-spear6xx/clock.c | 14 +-
> > arch/arm/mach-spear6xx/spear600.c | 25 ----
> > arch/arm/mach-spear6xx/spear600_evb.c | 54 -------
> > arch/arm/mach-spear6xx/spear6xx.c | 132
> > +++++------------- 9 files changed, 262 insertions(+), 191 deletions(-)
> > create mode 100644 Documentation/devicetree/bindings/arm/spear.txt
> > create mode 100644 arch/arm/boot/dts/spear600-evb.dts
> > create mode 100644 arch/arm/boot/dts/spear600.dtsi
> > delete mode 100644 arch/arm/mach-spear6xx/spear600.c
> > delete mode 100644 arch/arm/mach-spear6xx/spear600_evb.c
> >
> > diff --git a/Documentation/devicetree/bindings/arm/spear.txt
> > b/Documentation/devicetree/bindings/arm/spear.txt new file mode 100644
> > index 0000000..f8e54f0
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/arm/spear.txt
> > @@ -0,0 +1,8 @@
> > +ST SPEAr Platforms Device Tree Bindings
> > +---------------------------------------
> > +
> > +Boards with the ST SPEAr600 SoC shall have the following properties:
> > +
> > +Required root node property:
> > +
> > +compatible = "st,spear600";
> > diff --git a/arch/arm/boot/dts/spear600-evb.dts
> > b/arch/arm/boot/dts/spear600-evb.dts new file mode 100644
> > index 0000000..bf706b2
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/spear600-evb.dts
> > @@ -0,0 +1,37 @@
> > +/*
> > + * Copyright 2012 Stefan Roese <sr at denx.de>
> > + *
> > + * The code contained herein is licensed under the GNU General Public
> > + * License. You may obtain a copy of the GNU General Public License
> > + * Version 2 or later at the following locations:
> > + *
> > + * http://www.opensource.org/licenses/gpl-license.html
> > + * http://www.gnu.org/copyleft/gpl.html
> > + */
> > +
> > +/dts-v1/;
> > +/include/ "spear600.dtsi"
> > +
> > +/ {
> > + model = "ST SPEAr600 Evaluation Board";
> > + compatible = "st,spear600-evb", "st,spear600";
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > +
> > + memory {
> > + device_type = "memory";
> > + reg = <0 0x10000000>;
> > + };
> > +
> > + ahb {
> > + gmac: ethernet at e0800000 {
> > + phy-mode = "gmii";
> > + };
> > +
> > + apb {
> > + i2c at d0200000 {
> > + clock-frequency = <400000>;
>
> disable everything not core is good in the dtsi
> so board enable what they need and do not get surprised whe updating the
> dtsi
>
> but you need to consistant
Let me check, if I understand you correctly. I should disable all peripheral
devices in the *.dtsi file? All devices? Also interrupt controller? Is this
common practice? I don't see it in other dtsi file (e.g. omap4/tegra).
> > + };
> > + };
> > + };
> > +};
> > diff --git a/arch/arm/boot/dts/spear600.dtsi
> > b/arch/arm/boot/dts/spear600.dtsi new file mode 100644
> > index 0000000..cf14762
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/spear600.dtsi
> > @@ -0,0 +1,170 @@
> > +/*
> > + * Copyright 2012 Stefan Roese <sr at denx.de>
> > + *
> > + * The code contained herein is licensed under the GNU General Public
> > + * License. You may obtain a copy of the GNU General Public License
> > + * Version 2 or later at the following locations:
> > + *
> > + * http://www.opensource.org/licenses/gpl-license.html
> > + * http://www.gnu.org/copyleft/gpl.html
> > + */
> > +
> > +/include/ "skeleton.dtsi"
> > +
> > +/ {
> > + compatible = "st,spear600";
> > +
> > + cpus {
> > + cpu at 0 {
> > + compatible = "arm,arm926ejs";
> > + };
> > + };
> > +
> > + memory {
> > + device_type = "memory";
> > + reg = <0 0x40000000>;
> > + };
> > +
> > + ahb {
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + compatible = "simple-bus";
> > + ranges;
> > +
> > + vic0: interrupt-controller at f1100000 {
> > + compatible = "arm,pl190-vic";
> > + interrupt-controller;
> > + reg = <0xf1100000 0x1000>;
> > + #interrupt-cells = <1>;
> > + };
> > +
> > + vic1: interrupt-controller at f1000000 {
> > + compatible = "arm,pl190-vic";
> > + interrupt-controller;
> > + reg = <0xf1000000 0x1000>;
> > + #interrupt-cells = <1>;
> > + };
> > +
> > + gmac: ethernet at e0800000 {
> > + compatible = "st,spear600-gmac";
> > + reg = <0xe0800000 0x8000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <24 23>;
> > + interrupt-names = "macirq", "eth_wake_irq";
> > + };
> > +
> > + fsmc: flash at d1800000 {
> > + status = "disabled";
> > + compatible = "st,spear600-fsmc-nand";
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + reg = <0xd1800000 0x1000 /* FSMC Register */
> > + 0xd2000000 0x4000>; /* NAND Base */
> > + reg-names = "fsmc_regs", "nand_data";
> > + st,ale-off = <0x20000>;
> > + st,cle-off = <0x10000>;
> > + };
> > +
> > + smi: flash at fc000000 {
> > + status = "disabled";
> > + compatible = "st,spear600-smi";
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + reg = <0xfc000000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <12>;
> > + };
> > +
> > + ehci at e1800000 {
> > + status = "disabled";
> > + compatible = "st,spear600-ehci", "usb-ehci";
> > + reg = <0xe1800000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <27>;
> > + };
> > +
> > + ehci at e2000000 {
> > + status = "disabled";
> > + compatible = "st,spear600-ehci", "usb-ehci";
> > + reg = <0xe2000000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <29>;
> > + };
> > +
> > + ohci at e1900000 {
> > + status = "disabled";
> > + compatible = "st,spear600-ohci", "usb-ohci";
> > + reg = <0xe1900000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <26>;
> > + };
> > +
> > + ohci at e2100000 {
> > + status = "disabled";
> > + compatible = "st,spear600-ohci", "usb-ohci";
> > + reg = <0xe2100000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <28>;
> > + };
> > +
> > + apb {
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + compatible = "simple-bus";
> > + ranges;
> > +
> > + serial at d0000000 {
> > + compatible = "arm,pl011", "arm,primecell";
> > + reg = <0xd0000000 0x1000>;
> > + interrupt-parent = <&vic0>;
> > + interrupts = <24>;
> > + };
> > +
> > + serial at d0080000 {
> > + compatible = "arm,pl011", "arm,primecell";
> > + reg = <0xd0080000 0x1000>;
> > + interrupt-parent = <&vic0>;
> > + interrupts = <25>;
> > + };
> > +
> > + /* local/cpu GPIO */
> > + gpio0: gpio at f0100000 {
> > + #gpio-cells = <2>;
> > + compatible = "arm,pl061", "arm,primecell";
> > + gpio-controller;
> > + reg = <0xf0100000 0x1000>;
> > + interrupt-parent = <&vic0>;
> > + interrupts = <18>;
> > + };
> > +
> > + /* basic GPIO */
> > + gpio1: gpio at fc980000 {
>
> on ST SoC the gpio are usally called pio so pio0
Not on SPEAr600 as far as I can tell.
> > + #gpio-cells = <2>;
> > + compatible = "arm,pl061", "arm,primecell";
> > + gpio-controller;
> > + reg = <0xfc980000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <19>;
> > + };
> > +
> > + /* appl GPIO */
> > + gpio2: gpio at d8100000 {
> > + #gpio-cells = <2>;
> > + compatible = "arm,pl061", "arm,primecell";
> > + gpio-controller;
> > + reg = <0xd8100000 0x1000>;
> > + interrupt-parent = <&vic1>;
> > + interrupts = <4>;
> > + };
> > +
> > + i2c at d0200000 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + compatible = "snps,designware-i2c";
> > + reg = <0xd0200000 0x1000>;
> > + interrupt-parent = <&vic0>;
> > + interrupts = <28>;
> > + };
> > + };
> > + };
> > +};
> > diff --git a/arch/arm/mach-spear6xx/Kconfig
> > b/arch/arm/mach-spear6xx/Kconfig index ff4ae5b..fbe298b 100644
> > --- a/arch/arm/mach-spear6xx/Kconfig
> > +++ b/arch/arm/mach-spear6xx/Kconfig
> > @@ -5,11 +5,12 @@
> >
> > if ARCH_SPEAR6XX
> >
> > menu "SPEAr6xx Implementations"
> >
> > -config BOARD_SPEAR600_EVB
> > - bool "SPEAr600 Evaluation Board"
> > +config BOARD_SPEAR600_DT
> > + bool "SPEAr600 generic board configured via device-tree"
> >
> > select MACH_SPEAR600
> >
> > + select USE_OF
> >
> > help
> >
> > - Supports ST SPEAr600 Evaluation Board
> > + Supports ST SPEAr600 boards configured via the device-tree
> >
> > endmenu
> >
> > diff --git a/arch/arm/mach-spear6xx/Makefile
> > b/arch/arm/mach-spear6xx/Makefile index cc1a4d8..76e5750 100644
> > --- a/arch/arm/mach-spear6xx/Makefile
> > +++ b/arch/arm/mach-spear6xx/Makefile
> > @@ -4,9 +4,3 @@
> >
> > # common files
> > obj-y += clock.o spear6xx.o
> >
> > -
> > -# spear600 specific files
> > -obj-$(CONFIG_MACH_SPEAR600) += spear600.o
> > -
> > -# spear600 boards files
> > -obj-$(CONFIG_BOARD_SPEAR600_EVB) += spear600_evb.o
> > diff --git a/arch/arm/mach-spear6xx/clock.c
> > b/arch/arm/mach-spear6xx/clock.c index ac70e0d..358f280 100644
> > --- a/arch/arm/mach-spear6xx/clock.c
> > +++ b/arch/arm/mach-spear6xx/clock.c
> > @@ -641,8 +641,8 @@ static struct clk_lookup spear_clk_lookups[] = {
> >
> > { .con_id = "gpt0_synth_clk", .clk = &gpt0_synth_clk},
> > { .con_id = "gpt2_synth_clk", .clk = &gpt2_synth_clk},
> > { .con_id = "gpt3_synth_clk", .clk = &gpt3_synth_clk},
> >
> > - { .dev_id = "uart0", .clk = &uart0_clk},
> > - { .dev_id = "uart1", .clk = &uart1_clk},
> > + { .dev_id = "d0000000.serial", .clk = &uart0_clk},
> > + { .dev_id = "d0080000.serial", .clk = &uart1_clk},
>
> switch to the macro CLK_.. will be good but can be done later
Sure. Still a lot to do...
> otherwise look good
Ufff. Good.
Thanks,
Stefan
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