Commit 8dc7ab65 authored by Svyatoslav Ryhel's avatar Svyatoslav Ryhel Committed by Greg Kroah-Hartman
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usb: phy: tegra: parametrize HSIC PTS value 



The parallel transceiver select used in HSIC mode differs on Tegra20,
where it uses the UTMI value (0), whereas Tegra30+ uses a dedicated HSIC
value. Reflect this in the SoC config.

Signed-off-by: default avatarSvyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: default avatarMikko Perttunen <mperttunen@nvidia.com>
Link: https://patch.msgid.link/20260202080526.23487-4-clamor95@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a7abf50d

drivers/usb/phy/phy-tegra-usb.c

+3 −4
Original line number Diff line number Diff line
@@ -957,10 +957,7 @@ static int uhsic_phy_power_on(struct tegra_usb_phy *phy) 
		writel_relaxed(val, base + USB_USBMODE);

	}



	if (phy->soc_config->has_hostpc)

		set_pts(phy, TEGRA_USB_HOSTPC1_DEVLC_PTS_HSIC);

	else

		set_pts(phy, 0);

	set_pts(phy, phy->soc_config->uhsic_pts_value);



	val = readl_relaxed(base + USB_TXFILLTUNING);

	if ((val & USB_FIFO_TXFILL_MASK) != USB_FIFO_TXFILL_THRES(0x10)) {
@@ -1474,6 +1471,7 @@ static const struct tegra_phy_soc_config tegra20_soc_config = { 
	.requires_pmc_ao_power_up = false,

	.uhsic_registers_offset = 0,

	.uhsic_tx_rtune = 0, /* 40 ohm */

	.uhsic_pts_value = 0, /* UTMI */

};



static const struct tegra_phy_soc_config tegra30_soc_config = {
@@ -1484,6 +1482,7 @@ static const struct tegra_phy_soc_config tegra30_soc_config = { 
	.requires_pmc_ao_power_up = true,

	.uhsic_registers_offset = 0x400,

	.uhsic_tx_rtune = 8,  /* 50 ohm */

	.uhsic_pts_value = TEGRA_USB_HOSTPC1_DEVLC_PTS_HSIC,

};



static const struct of_device_id tegra_usb_phy_id_table[] = {

include/linux/usb/tegra_usb_phy.h

+2 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ struct gpio_desc; 
 * uhsic_registers_offset: for Tegra30+ where HSIC registers were offset

 *      comparing to Tegra20 by 0x400, since Tegra20 has no UTMIP on PHY2

 * uhsic_tx_rtune: fine tuned 50 Ohm termination resistor for NMOS/PMOS driver

 * uhsic_pts_value: parallel transceiver select enumeration value

 */



struct tegra_phy_soc_config {
@@ -36,6 +37,7 @@ struct tegra_phy_soc_config { 
	bool requires_pmc_ao_power_up;

	u32 uhsic_registers_offset;

	u32 uhsic_tx_rtune;

	u32 uhsic_pts_value;

};



struct tegra_utmip_config {