On Tue, May 10, 2022 at 02:12:41PM +0200, Oleksij Rempel wrote:
> Port chip specific configuration for stm32mp15x SoC from kernel v5.18-rc4.
> This patch is needed to fix USB host support on OTG port. Tested on
> stm32mp151.
>
> Signed-off-by: Oleksij Rempel <o.rem...@pengutronix.de>
> ---
> drivers/usb/dwc2/dwc2.c | 51 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 51 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/drivers/usb/dwc2/dwc2.c b/drivers/usb/dwc2/dwc2.c
> index 1b5981c2d5..8cb99446e4 100644
> --- a/drivers/usb/dwc2/dwc2.c
> +++ b/drivers/usb/dwc2/dwc2.c
> @@ -13,9 +13,49 @@
> #include <driver.h>
> #include <linux/clk.h>
> #include <linux/reset.h>
> +#include <of_device.h>
>
> #include "dwc2.h"
>
> +static void dwc2_set_stm32mp15_fsotg_params(struct dwc2 *dwc2)
> +{
> + struct dwc2_core_params *p = &dwc2->params;
> +
> + p->otg_cap &= ~(DWC2_CAP_PARAM_HNP_SRP_CAPABLE
> + | DWC2_CAP_PARAM_SRP_ONLY_CAPABLE);
> + p->otg_cap |= DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
> + p->speed = DWC2_SPEED_PARAM_FULL;
> + p->host_rx_fifo_size = 128;
> + p->host_nperio_tx_fifo_size = 96;
> + p->host_perio_tx_fifo_size = 96;
> + p->max_packet_count = 256;
> + p->phy_type = DWC2_PHY_TYPE_PARAM_FS;
> + p->i2c_enable = false;
> + p->activate_stm_fs_transceiver = true;
> + p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
> + p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
> + p->host_support_fs_ls_low_power = true;
> + p->host_ls_low_power_phy_clk = true;
> +}
> +
> +static void dwc2_set_stm32mp15_hsotg_params(struct dwc2 *dwc2)
> +{
> + struct dwc2_core_params *p = &dwc2->params;
> +
> + p->otg_cap &= ~(DWC2_CAP_PARAM_HNP_SRP_CAPABLE
> + | DWC2_CAP_PARAM_SRP_ONLY_CAPABLE);
> + p->otg_cap |= DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
> + p->host_rx_fifo_size = 440;
> + p->host_nperio_tx_fifo_size = 256;
> + p->host_perio_tx_fifo_size = 256;
> + p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
> + p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
> + p->lpm = false;
> + p->lpm_clock_gating = false;
> + p->besl = false;
> + p->hird_threshold_en = false;
> +}
> +
> static int dwc2_set_mode(void *ctx, enum usb_dr_mode mode)
> {
> struct dwc2 *dwc2 = ctx;
> @@ -43,10 +83,13 @@ static int dwc2_set_mode(void *ctx, enum usb_dr_mode mode)
> return ret;
> }
>
> +typedef void (*set_params_cb)(struct dwc2 *dwc2);
> +
> static int dwc2_probe(struct device_d *dev)
> {
> struct resource *iores;
> struct dwc2 *dwc2;
> + set_params_cb set_params;
> int ret;
>
> dwc2 = xzalloc(sizeof(*dwc2));
> @@ -107,6 +150,10 @@ static int dwc2_probe(struct device_d *dev)
>
> dwc2_set_default_params(dwc2);
>
> + set_params = of_device_get_match_data(dev);
> + if (set_params)
> + set_params(dwc2);
> +
> dma_set_mask(dev, DMA_BIT_MASK(32));
> dev->priv = dwc2;
>
> @@ -148,6 +195,10 @@ static const struct of_device_id dwc2_platform_dt_ids[]
> = {
> { .compatible = "brcm,bcm2835-usb", },
> { .compatible = "brcm,bcm2708-usb", },
> { .compatible = "snps,dwc2", },
> + { .compatible = "st,stm32mp15-fsotg",
> + .data = dwc2_set_stm32mp15_fsotg_params },
> + { .compatible = "st,stm32mp15-hsotg",
> + .data = dwc2_set_stm32mp15_hsotg_params },
> { }
> };
>
> --
> 2.30.2
>
>
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