Thread (3 messages) 3 messages, 2 authors, 2012-12-03

Re: [PATCH v2] ARM: Exynos5250: Enabling dwc3-exynos driver

From: Vivek Gautam <hidden>
Date: 2012-12-03 13:43:15
Also in: linux-arm-kernel, linux-samsung-soc

Hi Kukjin,

On Thu, Nov 8, 2012 at 2:02 PM, Vivek Gautam [off-list ref] wrote:
Adding DWC3 device tree node for Exynos5250 along with the
device address and clock support needed for the controller.
Does this change needs looks fine?
Any thoughts about this please ?
quoted hunk ↗ jump to hunk
Signed-off-by: Vivek Gautam <redacted>
---
 .../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.
+ - 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

--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


-- 
Thanks & Regards
Vivek
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help