1 From 20684f46eb962173b57ba2d70f9f2e028c95c4c9 Mon Sep 17 00:00:00 2001
2 From: Jonathan Bell <jonathan@raspberrypi.com>
3 Date: Wed, 24 Jan 2024 16:28:19 +0000
4 Subject: [PATCH 0853/1085] drivers: usb: dwc3: add FS/LS bus instance parkmode
7 There are three parkmode disable bits, one for each bus instance type.
8 Add FS/LS and parse the quirk out of DT. Also update the slightly
9 mangled quirk descriptions.
11 Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
13 drivers/usb/dwc3/core.c | 5 +++++
14 drivers/usb/dwc3/core.h | 12 ++++++++----
15 2 files changed, 13 insertions(+), 4 deletions(-)
17 --- a/drivers/usb/dwc3/core.c
18 +++ b/drivers/usb/dwc3/core.c
19 @@ -1372,6 +1372,9 @@ static int dwc3_core_init(struct dwc3 *d
20 if (dwc->parkmode_disable_hs_quirk)
21 reg |= DWC3_GUCTL1_PARKMODE_DISABLE_HS;
23 + if (dwc->parkmode_disable_fsls_quirk)
24 + reg |= DWC3_GUCTL1_PARKMODE_DISABLE_FSLS;
26 if (DWC3_VER_IS_WITHIN(DWC3, 290A, ANY) &&
27 (dwc->maximum_speed == USB_SPEED_HIGH ||
28 dwc->maximum_speed == USB_SPEED_FULL))
29 @@ -1670,6 +1673,8 @@ static void dwc3_get_properties(struct d
30 "snps,parkmode-disable-ss-quirk");
31 dwc->parkmode_disable_hs_quirk = device_property_read_bool(dev,
32 "snps,parkmode-disable-hs-quirk");
33 + dwc->parkmode_disable_fsls_quirk = device_property_read_bool(dev,
34 + "snps,parkmode-disable-fsls-quirk");
35 dwc->gfladj_refclk_lpm_sel = device_property_read_bool(dev,
36 "snps,gfladj-refclk-lpm-sel-quirk");
38 --- a/drivers/usb/dwc3/core.h
39 +++ b/drivers/usb/dwc3/core.h
41 #define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24)
42 #define DWC3_GUCTL1_PARKMODE_DISABLE_SS BIT(17)
43 #define DWC3_GUCTL1_PARKMODE_DISABLE_HS BIT(16)
44 +#define DWC3_GUCTL1_PARKMODE_DISABLE_FSLS BIT(15)
45 #define DWC3_GUCTL1_RESUME_OPMODE_HS_HOST BIT(10)
47 /* Global Status Register */
48 @@ -1116,10 +1117,12 @@ struct dwc3_scratchpad_array {
49 * generation after resume from suspend.
50 * @ulpi_ext_vbus_drv: Set to confiure the upli chip to drives CPEN pin
51 * VBUS with an external supply.
52 - * @parkmode_disable_ss_quirk: set if we need to disable all SuperSpeed
53 - * instances in park mode.
54 - * @parkmode_disable_hs_quirk: set if we need to disable all HishSpeed
55 - * instances in park mode.
56 + * @parkmode_disable_ss_quirk: If set, disable park mode feature for all
57 + * Superspeed instances.
58 + * @parkmode_disable_hs_quirk: If set, disable park mode feature for all
59 + * Highspeed instances.
60 + * @parkmode_disable_fsls_quirk: If set, disable park mode feature for all
61 + * Full/Lowspeed instances.
62 * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
63 * @tx_de_emphasis: Tx de-emphasis value
64 * 0 - -6dB de-emphasis
65 @@ -1346,6 +1349,7 @@ struct dwc3 {
66 unsigned ulpi_ext_vbus_drv:1;
67 unsigned parkmode_disable_ss_quirk:1;
68 unsigned parkmode_disable_hs_quirk:1;
69 + unsigned parkmode_disable_fsls_quirk:1;
70 unsigned gfladj_refclk_lpm_sel:1;
72 unsigned tx_de_emphasis_quirk:1;