apm821xx: add amcc, usb-otg-405ex devicetree definition
This patch adds support for the amcc,usb-otg-405ex device which is found in all APM82181 SoCs. Note: The system can't use the generic "snps,dwc2" compatible because of the special ahbcfg configuration. The default GAHBCFG_HBSTLEN_INCR4 of snps,dwc2 can cause a system hang when the USB and SATA is used concurrently. Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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1 changed files with 44 additions and 0 deletions
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@ -0,0 +1,44 @@
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--- a/drivers/usb/dwc2/platform.c
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+++ b/drivers/usb/dwc2/platform.c
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@@ -115,6 +115,37 @@ static const struct dwc2_core_params par
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.hibernation = -1,
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};
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+static const struct dwc2_core_params params_amcc_dwc_otg = {
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+ .otg_cap = DWC2_CAP_PARAM_HNP_SRP_CAPABLE,
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+ .otg_ver = -1,
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+ .dma_enable = -1,
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+ .dma_desc_enable = -1,
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+ .speed = -1,
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+ .enable_dynamic_fifo = -1,
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+ .en_multiple_tx_fifo = -1,
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+ .host_rx_fifo_size = -1,
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+ .host_nperio_tx_fifo_size = -1,
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+ .host_perio_tx_fifo_size = -1,
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+ .max_transfer_size = -1,
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+ .max_packet_count = -1,
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+ .host_channels = -1,
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+ .phy_type = -1,
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+ .phy_utmi_width = -1,
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+ .phy_ulpi_ddr = -1,
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+ .phy_ulpi_ext_vbus = -1,
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+ .i2c_enable = -1,
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+ .ulpi_fs_ls = -1,
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+ .host_support_fs_ls_low_power = -1,
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+ .host_ls_low_power_phy_clk = -1,
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+ .ts_dline = -1,
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+ .reload_ctl = -1,
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+ .ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
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+ GAHBCFG_HBSTLEN_SHIFT,
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+ .uframe_sched = -1,
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+ .external_id_pin_ctl = -1,
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+ .hibernation = -1,
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+};
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+
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static int __dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg)
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{
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struct platform_device *pdev = to_platform_device(hsotg->dev);
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@@ -309,2 +340,3 @@ static int dwc2_driver_remove(struct pla
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static const struct of_device_id dwc2_of_match_table[] = {
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+ { .compatible = "amcc,usb-otg-405ex", .data = ¶ms_amcc_dwc_otg },
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{ .compatible = "brcm,bcm2835-usb", .data = ¶ms_bcm2835 },
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