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Date: Tue, 3 Dec 2013 11:46:51 -0800
From: David Daney <ddaney.cavm@...il.com>
To: linux-mips@...ux-mips.org, ralf@...ux-mips.org,
Aaro Koskinen <aaro.koskinen@....fi>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com>
Subject: [PATCH 1/2] MIPS: OCTEON: Supply OCTEON+ USB nodes in internal device trees.
From: David Daney <david.daney@...ium.com>
This will be needed by the next patch to use said nodes for probing
via the device tree.
Signed-off-by: David Daney <david.daney@...ium.com>
---
.../cavium-octeon/executive/cvmx-helper-board.c | 27 ++++++++++++++++++
arch/mips/cavium-octeon/octeon-platform.c | 32 ++++++++++++++++++++++
arch/mips/cavium-octeon/octeon_3xxx.dts | 19 +++++++++++++
arch/mips/include/asm/octeon/cvmx-helper-board.h | 9 ++++++
4 files changed, 87 insertions(+)
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
index 0a1283c..b764df6 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
@@ -722,3 +722,30 @@ int __cvmx_helper_board_hardware_enable(int interface)
}
return 0;
}
+
+/**
+ * Get the clock type used for the USB block based on board type.
+ * Used by the USB code for auto configuration of clock type.
+ *
+ * Return USB clock type enumeration
+ */
+enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void)
+{
+ switch (cvmx_sysinfo_get()->board_type) {
+ case CVMX_BOARD_TYPE_BBGW_REF:
+ case CVMX_BOARD_TYPE_LANAI2_A:
+ case CVMX_BOARD_TYPE_LANAI2_U:
+ case CVMX_BOARD_TYPE_LANAI2_G:
+ case CVMX_BOARD_TYPE_NIC10E_66:
+ case CVMX_BOARD_TYPE_UBNT_E100:
+ return USB_CLOCK_TYPE_CRYSTAL_12;
+ case CVMX_BOARD_TYPE_NIC10E:
+ return USB_CLOCK_TYPE_REF_12;
+ default:
+ break;
+ }
+ /* Most boards except NIC10e use a 12MHz crystal */
+ if (OCTEON_IS_MODEL(OCTEON_FAM_2))
+ return USB_CLOCK_TYPE_CRYSTAL_12;
+ return USB_CLOCK_TYPE_REF_48;
+}
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 1830874..cd4fd6b 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -171,6 +171,7 @@ device_initcall(octeon_ohci_device_init);
static struct of_device_id __initdata octeon_ids[] = {
{ .compatible = "simple-bus", },
{ .compatible = "cavium,octeon-6335-uctl", },
+ { .compatible = "cavium,octeon-5750-usbn", },
{ .compatible = "cavium,octeon-3860-bootbus", },
{ .compatible = "cavium,mdio-mux", },
{ .compatible = "gpio-leds", },
@@ -682,6 +683,37 @@ end_led:
}
}
+ /* DWC2 USB */
+ alias_prop = fdt_getprop(initial_boot_params, aliases,
+ "usbn", NULL);
+ if (alias_prop) {
+ int usbn = fdt_path_offset(initial_boot_params, alias_prop);
+
+ if (usbn >= 0 && (current_cpu_type() == CPU_CAVIUM_OCTEON2 ||
+ !octeon_has_feature(OCTEON_FEATURE_USB))) {
+ pr_debug("Deleting usbn\n");
+ fdt_nop_node(initial_boot_params, usbn);
+ fdt_nop_property(initial_boot_params, aliases, "usbn");
+ } else {
+ __be32 new_f[1];
+ enum cvmx_helper_board_usb_clock_types c;
+ c = __cvmx_helper_board_usb_get_clock_type();
+ switch (c) {
+ case USB_CLOCK_TYPE_REF_48:
+ new_f[0] = cpu_to_be32(48000000);
+ fdt_setprop_inplace(initial_boot_params, usbn,
+ "refclk-frequency", new_f, sizeof(new_f));
+ /* Fall through ...*/
+ case USB_CLOCK_TYPE_REF_12:
+ /* Missing "refclk-type" defaults to external. */
+ fdt_nop_property(initial_boot_params, usbn, "refclk-type");
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
return 0;
}
diff --git a/arch/mips/cavium-octeon/octeon_3xxx.dts b/arch/mips/cavium-octeon/octeon_3xxx.dts
index 88cb42d..fa33115 100644
--- a/arch/mips/cavium-octeon/octeon_3xxx.dts
+++ b/arch/mips/cavium-octeon/octeon_3xxx.dts
@@ -550,6 +550,24 @@
big-endian-regs;
};
};
+
+ usbn: usbn@...0068000000 {
+ compatible = "cavium,octeon-5750-usbn";
+ reg = <0x11800 0x68000000 0x0 0x1000>;
+ ranges; /* Direct mapping */
+ #address-cells = <2>;
+ #size-cells = <2>;
+ /* 12MHz, 24MHz and 48MHz allowed */
+ refclk-frequency = <12000000>;
+ /* Either "crystal" or "external" */
+ refclk-type = "crystal";
+
+ usbc@...0010000000 {
+ compatible = "cavium,octeon-5750-usbc";
+ reg = <0x16f00 0x10000000 0x0 0x80000>;
+ interrupts = <0 56>;
+ };
+ };
};
aliases {
@@ -566,6 +584,7 @@
flash0 = &flash0;
cf0 = &cf0;
uctl = &uctl;
+ usbn = &usbn;
led0 = &led0;
};
};
diff --git a/arch/mips/include/asm/octeon/cvmx-helper-board.h b/arch/mips/include/asm/octeon/cvmx-helper-board.h
index 41785dd..8933203 100644
--- a/arch/mips/include/asm/octeon/cvmx-helper-board.h
+++ b/arch/mips/include/asm/octeon/cvmx-helper-board.h
@@ -36,6 +36,13 @@
#include <asm/octeon/cvmx-helper.h>
+enum cvmx_helper_board_usb_clock_types {
+ USB_CLOCK_TYPE_REF_12,
+ USB_CLOCK_TYPE_REF_24,
+ USB_CLOCK_TYPE_REF_48,
+ USB_CLOCK_TYPE_CRYSTAL_12,
+};
+
typedef enum {
set_phy_link_flags_autoneg = 0x1,
set_phy_link_flags_flow_control_dont_touch = 0x0 << 1,
@@ -154,4 +161,6 @@ extern int __cvmx_helper_board_interface_probe(int interface,
*/
extern int __cvmx_helper_board_hardware_enable(int interface);
+enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void);
+
#endif /* __CVMX_HELPER_BOARD_H__ */
--
1.7.11.7
--
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