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arm64: dts: ls1028a: default to OTG mode for USB 

At the moment, the dtsi will force the dr_mode to host. This is
problematic because it will always turn on the Vbus voltage regardless
if the port is host or device. This might lead to a "shortcut" between
the two USB endpoints because both might have their Vbus supplies
enabled. Therefore, the default should be "otg" for any ports which
aren't host only (from a SoC point of view) and have a user of the dtsi
file overwrite that explicitly.

Move the 'dr_mode = "host";' into the board dts. Now that the dtsi
doesn't set the dr_mode anymore, we can also drop the 'dr_mode = "otg";'
in the board dts because that is the default value if dr_mode is not
set.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Michael Walle 2022-03-30 13:34:42 +02:00 committed by Shawn Guo
parent be0b178c50
commit 73d901d6dc
4 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
View File

@ -324,5 +324,6 @@
};
&usb1 {
dr_mode = "host";
status = "okay";
};

2
arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
View File

@ -382,9 +382,11 @@
};
&usb0 {
dr_mode = "host";
status = "okay";
};
&usb1 {
dr_mode = "host";
status = "okay";
};

2
arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
View File

@ -299,10 +299,10 @@
};
&usb0 {
dr_mode = "host";
status = "okay";
};
&usb1 {
dr_mode = "otg";
status = "okay";
};

2
arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
View File

@ -599,7 +599,6 @@
compatible = "fsl,ls1028a-dwc3", "snps,dwc3";
reg = <0x0 0x3100000 0x0 0x10000>;
interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
dr_mode = "host";
snps,dis_rxdet_inp3_quirk;
snps,quirk-frame-length-adjustment = <0x20>;
snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
@ -610,7 +609,6 @@
compatible = "fsl,ls1028a-dwc3", "snps,dwc3";
reg = <0x0 0x3110000 0x0 0x10000>;
interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
dr_mode = "host";
snps,dis_rxdet_inp3_quirk;
snps,quirk-frame-length-adjustment = <0x20>;
snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;