This patch adds support for the "amcc,usb-otg" device
which is found in the PowerPC Canyonlands' dts.
The device definition was added by:
commit c89b3458d8cc ("powerpc/44x: Add USB DWC DTS entry to Canyonlands
board")'.
AMCC produced a standalone driver that was sent to the
linuxppc-dev at the time. However, it was never integrated.
Signed-off-by: Christian Lamparter <[email protected]>
---
For anyone interested: the driver was sent to the ML multiple times back
in 2012 [0], [1].
[0] <https://lists.ozlabs.org/pipermail/linuxppc-dev/2012-May/097847.html>
[1] <https://lists.ozlabs.org/pipermail/linuxppc-dev/2012-May/097938.html>
---
Documentation/devicetree/bindings/usb/dwc2.txt | 1 +
drivers/usb/dwc2/platform.c | 33 ++++++++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt
b/Documentation/devicetree/bindings/usb/dwc2.txt
index 2c30a54..73c4dc5 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.txt
+++ b/Documentation/devicetree/bindings/usb/dwc2.txt
@@ -12,6 +12,7 @@ Required properties:
- "lantiq,xrx200-usb": The DWC2 USB controller instance in Lantiq XRX SoCs;
- "amlogic,meson8b-usb": The DWC2 USB controller instance in Amlogic Meson8b
SoCs;
- "amlogic,meson-gxbb-usb": The DWC2 USB controller instance in Amlogic S905
SoCs;
+ - "amcc,usb-otg": The DWC2 USB controller instance in AMCC Canyonlands 460EX
SoCs;
- snps,dwc2: A generic DWC2 USB controller with default parameters.
- reg : Should contain 1 register range (address and length)
- interrupts : Should contain 1 interrupt
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index dde08d5..8230037 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -214,6 +214,38 @@ static const struct dwc2_core_params params_amlogic = {
.hibernation = -1,
};
+static const struct dwc2_core_params params_amcc_dwc_otg = {
+ .otg_cap = DWC2_CAP_PARAM_HNP_SRP_CAPABLE,
+ .otg_ver = -1,
+ .dma_enable = -1,
+ .dma_desc_enable = -1,
+ .speed = -1,
+ .enable_dynamic_fifo = -1,
+ .en_multiple_tx_fifo = -1,
+ .host_rx_fifo_size = -1,
+ .host_nperio_tx_fifo_size = -1,
+ .host_perio_tx_fifo_size = -1,
+ .max_transfer_size = -1,
+ .max_packet_count = -1,
+ .host_channels = -1,
+ .phy_type = -1,
+ .phy_utmi_width = -1,
+ .phy_ulpi_ddr = -1,
+ .phy_ulpi_ext_vbus = -1,
+ .i2c_enable = -1,
+ .ulpi_fs_ls = -1,
+ .host_support_fs_ls_low_power = -1,
+ .host_ls_low_power_phy_clk = -1,
+ .ts_dline = -1,
+ .reload_ctl = -1,
+ /* Avoid system hang during concurrently using USB and SATA */
+ .ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
+ GAHBCFG_HBSTLEN_SHIFT,
+ .uframe_sched = -1,
+ .external_id_pin_ctl = -1,
+ .hibernation = -1,
+};
+
/*
* Check the dr_mode against the module configuration and hardware
* capabilities.
@@ -521,6 +553,7 @@ static const struct of_device_id dwc2_of_match_table[] = {
{ .compatible = "samsung,s3c6400-hsotg", .data = NULL},
{ .compatible = "amlogic,meson8b-usb", .data = ¶ms_amlogic },
{ .compatible = "amlogic,meson-gxbb-usb", .data = ¶ms_amlogic },
+ { .compatible = "amcc,dwc-otg", .data = ¶ms_amcc_dwc_otg },
{},
};
MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
--
2.10.2
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