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Date: Wed, 4 Dec 2013 23:39:51 +0200
From: Aaro Koskinen <aaro.koskinen@....fi>
To: David Daney <ddaney.cavm@...il.com>
Cc: linux-mips@...ux-mips.org, ralf@...ux-mips.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com>
Subject: Re: [PATCH 1/2] MIPS: OCTEON: Supply OCTEON+ USB nodes in internal
device trees.
Hi,
On Tue, Dec 03, 2013 at 11:46:51AM -0800, David Daney wrote:
> 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>
Tested-by: Aaro Koskinen <aaro.koskinen@....fi>
A.
> ---
> .../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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