On Thu, 08 Nov 2012 14:02:13 +0530, Vivek Gautam <gautam.vivek@xxxxxxxxxxx> wrote:
> Adding DWC3 device tree node for Exynos5250 along with the
> device address and clock support needed for the controller.
>
> Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
> ---
> .../devicetree/bindings/usb/exynos-usb.txt | 14 +++++++++++
> arch/arm/boot/dts/exynos5250.dtsi | 6 +++++
> arch/arm/mach-exynos/Kconfig | 1 +
> arch/arm/mach-exynos/clock-exynos5.c | 24 ++++++++++++++++++++
> arch/arm/mach-exynos/include/mach/map.h | 1 +
> arch/arm/mach-exynos/mach-exynos5-dt.c | 2 +
> 6 files changed, 48 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/usb/exynos-usb.txt b/Documentation/devicetree/bindings/usb/exynos-usb.txt
> index 5ff3def1..a7e3eaa 100644
> --- a/Documentation/devicetree/bindings/usb/exynos-usb.txt
> +++ b/Documentation/devicetree/bindings/usb/exynos-usb.txt
> @@ -38,3 +38,17 @@ Example:
> reg = <0x12120000 0x100>;
> interrupts = <0 71 0>;
> };
> +
> +DWC3
> +Required properties:
> + - compatible: should be "samsung,exynos-dwc3" for USB 3.0 DWC3 controller.
Nit: Please use a specific chip in compatible strings. ie.
"samsung,exynos5250-dwc3". Newer parts using the same core can claim
compatibility by including the older string in the compatible list.
> + - reg: physical base address of the controller and length of memory mapped
> + region.
> + - interrupts: interrupt number to the cpu.
> +
> +Example:
> + usb@12000000 {
> + compatible = "samsung,exynos-dwc3";
> + reg = <0x12000000 0x10000>;
> + interrupts = <0 72 0>;
> + };
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> index f18abe0..d349636 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -68,6 +68,12 @@
> interrupts = <0 96 0>;
> };
>
> + usb@12000000 {
> + compatible = "samsung,exynos-dwc3";
> + reg = <0x12000000 0x10000>;
> + interrupts = <0 72 0>;
> + };
> +
> rtc {
> compatible = "samsung,s3c6410-rtc";
> reg = <0x101E0000 0x100>;
> diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
> index bb3b09a..588814a 100644
> --- a/arch/arm/mach-exynos/Kconfig
> +++ b/arch/arm/mach-exynos/Kconfig
> @@ -422,6 +422,7 @@ config MACH_EXYNOS5_DT
> select ARM_AMBA
> select SOC_EXYNOS5250
> select USE_OF
> + select USB_ARCH_HAS_XHCI
> help
> Machine support for Samsung EXYNOS5 machine with device tree enabled.
> Select this if a fdt blob is available for the EXYNOS5 SoC based board.
> diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c
> index a88e0d9..ee094ee 100644
> --- a/arch/arm/mach-exynos/clock-exynos5.c
> +++ b/arch/arm/mach-exynos/clock-exynos5.c
> @@ -740,6 +740,11 @@ static struct clk exynos5_init_clocks_off[] = {
> .enable = exynos5_clk_ip_fsys_ctrl ,
> .ctrlbit = (1 << 18),
> }, {
> + .name = "usbdrd30",
> + .parent = &exynos5_clk_aclk_200.clk,
> + .enable = exynos5_clk_ip_fsys_ctrl,
> + .ctrlbit = (1 << 19),
> + }, {
> .name = "usbotg",
> .enable = exynos5_clk_ip_fsys_ctrl,
> .ctrlbit = (1 << 7),
> @@ -1004,6 +1009,16 @@ struct clksrc_sources exynos5_clkset_group = {
> .nr_sources = ARRAY_SIZE(exynos5_clkset_group_list),
> };
>
> +struct clk *exynos5_clkset_usbdrd30_list[] = {
> + [0] = &exynos5_clk_mout_mpll.clk,
> + [1] = &exynos5_clk_mout_cpll.clk,
> +};
> +
> +struct clksrc_sources exynos5_clkset_usbdrd30 = {
> + .sources = exynos5_clkset_usbdrd30_list,
> + .nr_sources = ARRAY_SIZE(exynos5_clkset_usbdrd30_list),
> +};
> +
> /* Possible clock sources for aclk_266_gscl_sub Mux */
> static struct clk *clk_src_gscl_266_list[] = {
> [0] = &clk_ext_xtal_mux,
> @@ -1288,6 +1303,15 @@ static struct clksrc_clk exynos5_clksrcs[] = {
> .parent = &exynos5_clk_mout_cpll.clk,
> },
> .reg_div = { .reg = EXYNOS5_CLKDIV_GEN, .shift = 4, .size = 3 },
> + }, {
> + .clk = {
> + .name = "sclk_usbdrd30",
> + .enable = exynos5_clksrc_mask_fsys_ctrl,
> + .ctrlbit = (1 << 28),
> + },
> + .sources = &exynos5_clkset_usbdrd30,
> + .reg_src = { .reg = EXYNOS5_CLKSRC_FSYS, .shift = 28, .size = 1 },
> + .reg_div = { .reg = EXYNOS5_CLKDIV_FSYS0, .shift = 24, .size = 4 },
> },
> };
>
> diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
> index 471ffaf..064ca1c 100644
> --- a/arch/arm/mach-exynos/include/mach/map.h
> +++ b/arch/arm/mach-exynos/include/mach/map.h
> @@ -197,6 +197,7 @@
> #define EXYNOS4_PA_EHCI 0x12580000
> #define EXYNOS4_PA_OHCI 0x12590000
> #define EXYNOS4_PA_HSPHY 0x125B0000
> +#define EXYNOS5_PA_DRD 0x12000000
> #define EXYNOS5_PA_EHCI 0x12110000
> #define EXYNOS5_PA_OHCI 0x12120000
> #define EXYNOS4_PA_MFC 0x13400000
> diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
> index c03f3dd..3032222 100644
> --- a/arch/arm/mach-exynos/mach-exynos5-dt.c
> +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
> @@ -90,6 +90,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
> "s5p-ehci", NULL),
> OF_DEV_AUXDATA("samsung,exynos-ohci", EXYNOS5_PA_OHCI,
> "exynos-ohci", NULL),
> + OF_DEV_AUXDATA("samsung,exynos-dwc3", EXYNOS5_PA_DRD,
> + "exynos-dwc3", NULL),
> {},
> };
>
> --
> 1.7.6.5
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
--
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.
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