Linux/TMDXIDK5728: USB flash drive and webcam not detected

CJ Hsu

Prodigy 30 points

Part Number: TMDXIDK5728

Tool/software: Linux

Hi All:

I am using am572x idk evm now,, and I have config the kernel for usb mass storage and pwc(for webcam).

But when I insert usb flash drive or webcam into usb1, nothing happens.

Is there something that i missed??

Thanks

over 8 years ago

0 Bin Liu over 8 years ago

TI__Guru**** 182206 points

What is Processor SDK version do you use?

0 CJ Hsu over 8 years ago in reply to Bin Liu

Prodigy 30 points

I am using ti-processor-sdk-linux-am57xx-evm-04.02.00.09.

I have followed through steps mentioned here. processors.wiki.ti.com/.../Processor_SDK_Linux_Getting_Started_Guide

Booting linux kernel from sdcard with pre-built image provided in the sdk above is ok now.

The usb flash drive is not detected for pre-built image, so I reconfigure the config for kernel.

After the kernel is compiled, I copy the files in /SDK installed/targetNFS/boot to rootfs/boot/ on sdcard.

But the result is still the same.

.config file attached here 2110.config.txt

0 Bin Liu over 8 years ago in reply to CJ Hsu

TI__Guru**** 182206 points

Sorry, the USB function is broken in Processor SDK v4.2.0.9 on AM572x IDK and AM571x IDK, due to a pinmux change for PPS in the device tree file. Please apply the patch attached below to revert the DT change which restores the USB function.

Fullscreen 0001-Revert-arm-dts-add-cpts-1pps-latch-input-pins.patch.txt Download

From 2eee2983e2e993868b1a3f1c16c3187650341e2a Mon Sep 17 00:00:00 2001
From: Bin Liu <b-liu@ti.com>
Date: Thu, 15 Mar 2018 07:09:21 -0500
Subject: [PATCH] Revert "arm: dts: add cpts 1pps latch input pins"

This reverts commit e16c3535b0e91be8968adbfb5979d755e49ee0a9.

The reverted commit changes USB1_DRVVBUS pinmux to gpio, which breaks
the USB function.
---
 arch/arm/boot/dts/am571x-idk.dts | 21 +++------------------
 arch/arm/boot/dts/am572x-idk.dts | 21 +++------------------
 2 files changed, 6 insertions(+), 36 deletions(-)

diff --git a/arch/arm/boot/dts/am571x-idk.dts b/arch/arm/boot/dts/am571x-idk.dts
index 7a362327f51e..3afc970b8da3 100644
--- a/arch/arm/boot/dts/am571x-idk.dts
+++ b/arch/arm/boot/dts/am571x-idk.dts
@@ -286,16 +286,13 @@
 };
 
 &mac {
-	/* cptr pps1 generator and latch properties */
-	timers = <&timer16>, <&timer15>;
-	pinctrl-names = "pwm_off", "pwm_on", "ref_off", "ref_on",
-			"latch_on", "latch_off";
+	/* cptr pps1 generator properties */
+	timers = <&timer16>;
+	pinctrl-names = "pwm_off", "pwm_on", "ref_off", "ref_on";
 	pinctrl-0 = <&pps1_timer16_pwm_off>;
 	pinctrl-1 = <&pps1_timer16_pwm_on>;
 	pinctrl-2 = <&pps1_timer16_pwm2_off>;
 	pinctrl-3 = <&pps1_timer16_pwm2_on>;
-	pinctrl-4 = <&pps1_timer15_latch_on>;
-	pinctrl-5 = <&pps1_timer15_latch_off>;
 };
 
 &pruss1_eth {
@@ -339,18 +336,6 @@
 		>;
 	};
 
-	pps1_timer15_latch_on: pps1_timer15_latch_on {
-		pinctrl-single,pins = <
-			DRA7XX_CORE_IOPAD(0x3684, PIN_INPUT | MUX_MODE7)
-		>;
-	};
-
-	pps1_timer15_latch_off: pps1_timer15_latch_off {
-		pinctrl-single,pins = <
-			DRA7XX_CORE_IOPAD(0x3684, PIN_INPUT | MUX_MODE15)
-		>;
-	};
-
 	pr1_edc_sync0_on: pr1_edc_sync0_on {
 		pinctrl-single,pins = <
 			DRA7XX_CORE_IOPAD(0x3724, PIN_OUTPUT | MUX_MODE13)
diff --git a/arch/arm/boot/dts/am572x-idk.dts b/arch/arm/boot/dts/am572x-idk.dts
index e623fa145c78..1db34787e2e0 100644
--- a/arch/arm/boot/dts/am572x-idk.dts
+++ b/arch/arm/boot/dts/am572x-idk.dts
@@ -44,16 +44,13 @@
 };
 
 &mac {
-	/* cptr pps1 generator and latch properties */
-	timers = <&timer16>, <&timer15>;
-	pinctrl-names = "pwm_off", "pwm_on", "ref_off", "ref_on",
-			"latch_on", "latch_off";
+	/* cptr pps1 generator properties */
+	timers = <&timer16>;
+	pinctrl-names = "pwm_off", "pwm_on", "ref_off", "ref_on";
 	pinctrl-0 = <&pps1_timer16_pwm_off>;
 	pinctrl-1 = <&pps1_timer16_pwm_on>;
 	pinctrl-2 = <&pps1_timer16_pwm2_off>;
 	pinctrl-3 = <&pps1_timer16_pwm2_on>;
-	pinctrl-4 = <&pps1_timer15_latch_on>;
-	pinctrl-5 = <&pps1_timer15_latch_off>;
 };
 
 &pruss2_eth {
@@ -92,18 +89,6 @@
 		>;
 	};
 
-	pps1_timer15_latch_on: pps1_timer15_latch_on {
-		pinctrl-single,pins = <
-			DRA7XX_CORE_IOPAD(0x3684, PIN_INPUT | MUX_MODE7)
-		>;
-	};
-
-	pps1_timer15_latch_off: pps1_timer15_latch_off {
-		pinctrl-single,pins = <
-			DRA7XX_CORE_IOPAD(0x3684, PIN_INPUT | MUX_MODE15)
-		>;
-	};
-
 	pr2_edc_sync0_on: pr2_edc_sync0_on {
 		pinctrl-single,pins = <
 			DRA7XX_CORE_IOPAD(0x35f8, PIN_OUTPUT | MUX_MODE10)
-- 
1.9.1