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arm64: zynqmp: Wire gpio-delay driver for USB hub reset

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USB hub requires longer delay to get out of the reset to work properly
that's why use gpio-delay to ensure enough waiting time.

Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/e206e3ab2ad266935b81f5e9d3af2ed47b866826.1770105146.git.michal.simek@amd.com
This commit is contained in:
Michal Simek 2026-02-03 08:52:32 +01:00
parent 6282782afb
commit 601e08e0b7
5 changed files with 53 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/arm/dts/zynqmp-sck-kd-g-revA.dtso
View File

@ -3,7 +3,7 @@
* dts file for KD240 revA Carrier Card
*
* Copyright (C) 2021 - 2022, Xilinx, Inc.
* Copyright (C) 2022 - 2023, Advanced Micro Devices, Inc.
* Copyright (C) 2022 - 2026, Advanced Micro Devices, Inc.
*
* Michal Simek <michal.simek@amd.com>
*/
@ -43,6 +43,13 @@
#clock-cells = <0>;
clock-frequency = <25000000>;
};
slg_delay: enable-delay {
compatible = "gpio-delay";
#gpio-cells = <3>;
gpio-controller;
gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
};
};
&can0 {
@ -116,7 +123,7 @@
reg = <1>;
peer-hub = <&hub_3_0>;
i2c-bus = <&hub>;
reset-gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -125,7 +132,7 @@
reg = <2>;
peer-hub = <&hub_2_0>;
i2c-bus = <&hub>;
reset-gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
};

16
arch/arm/dts/zynqmp-sck-kr-g-revA.dtso
View File

@ -77,6 +77,14 @@
};
};
};
slg_delay: enable-delay {
compatible = "gpio-delay";
#gpio-cells = <3>;
gpio-controller;
gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>,
<&slg7xl45106 4 GPIO_ACTIVE_LOW>;
};
};
&i2c1 { /* I2C_SCK C26/C27 - MIO from SOM */
@ -187,7 +195,7 @@
reg = <1>;
peer-hub = <&hub_3_0>;
i2c-bus = <&hub_1>;
reset-gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -196,7 +204,7 @@
reg = <2>;
peer-hub = <&hub_2_0>;
i2c-bus = <&hub_1>;
reset-gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
};
@ -224,7 +232,7 @@
reg = <1>;
peer-hub = <&hub1_3_0>;
i2c-bus = <&hub_2>;
reset-gpios = <&slg7xl45106 4 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 1 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -233,7 +241,7 @@
reg = <2>;
peer-hub = <&hub1_2_0>;
i2c-bus = <&hub_2>;
reset-gpios = <&slg7xl45106 4 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 1 10000 10000>;
};
};

16
arch/arm/dts/zynqmp-sck-kr-g-revB.dtso
View File

@ -78,6 +78,14 @@
};
};
};
slg_delay: enable-delay {
compatible = "gpio-delay";
#gpio-cells = <3>;
gpio-controller;
gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>,
<&slg7xl45106 4 GPIO_ACTIVE_LOW>;
};
};
&i2c1 { /* I2C_SCK C26/C27 - MIO from SOM */
@ -188,7 +196,7 @@
reg = <1>;
peer-hub = <&hub_3_0>;
i2c-bus = <&hub_1>;
reset-gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -197,7 +205,7 @@
reg = <2>;
peer-hub = <&hub_2_0>;
i2c-bus = <&hub_1>;
reset-gpios = <&slg7xl45106 3 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
};
@ -225,7 +233,7 @@
reg = <1>;
peer-hub = <&hub1_3_0>;
i2c-bus = <&hub_2>;
reset-gpios = <&slg7xl45106 4 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 1 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -234,7 +242,7 @@
reg = <2>;
peer-hub = <&hub1_2_0>;
i2c-bus = <&hub_2>;
reset-gpios = <&slg7xl45106 4 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 1 10000 10000>;
};
};

13
arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
View File

@ -3,7 +3,7 @@
* dts file for KV260 revA Carrier Card
*
* (C) Copyright 2020 - 2022, Xilinx, Inc.
* (C) Copyright 2022 - 2025, Advanced Micro Devices, Inc.
* (C) Copyright 2022 - 2026, Advanced Micro Devices, Inc.
*
* SD level shifter:
* "A" - A01 board un-modified (NXP)
@ -78,6 +78,13 @@
};
};
};
slg_delay: enable-delay {
compatible = "gpio-delay";
#gpio-cells = <3>;
gpio-controller;
gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
};
};
&i2c1 { /* I2C_SCK C23/C24 - MIO from SOM */
@ -161,7 +168,7 @@
compatible = "usb424,2744";
reg = <1>;
peer-hub = <&hub_3_0>;
reset-gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -169,7 +176,7 @@
compatible = "usb424,5744";
reg = <2>;
peer-hub = <&hub_2_0>;
reset-gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
};

11
arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
View File

@ -74,6 +74,13 @@
};
};
};
slg_delay: enable-delay {
compatible = "gpio-delay";
#gpio-cells = <3>;
gpio-controller;
gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
};
};
&i2c1 { /* I2C_SCK C23/C24 - MIO from SOM */
@ -148,7 +155,7 @@
reg = <1>;
peer-hub = <&hub_3_0>;
i2c-bus = <&hub>;
reset-gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
/* 3.0 hub on port 2 */
@ -157,7 +164,7 @@
reg = <2>;
peer-hub = <&hub_2_0>;
i2c-bus = <&hub>;
reset-gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
reset-gpios = <&slg_delay 0 10000 10000>;
};
};