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Hello Tomasz Figa
于 2013年11月28日 22:37, Tomasz Figa 写道:
> Hi Randy,
>
> On Thursday 28 of November 2013 22:00:41 randy wrote:
>> I have development board whose SoC is exynos4412, I try to enable
>> the usb in it but I failed. I saw the document
>> Documentation/devicetree/bindings/usb/samsung-usbphy.txt, does it
>> mean that the usb driver is not done? And about that document, in
>> samsung datasheet(32.8.2), the address reg 0x125B_0000 + 32bits
>> contains hsic1, hsic0, phy1 and phy0's power control. And in
>> 0x1002_0704 + 3 * 32 bits, it contains usb_phy, hsic1_phy and
>> hsic2_phy control(8.8.1.27). So I doubt the documents.
>>
>> Here is the log and dts
>> ===========================log================================ [
>> 1.000000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI)
>> Driver [ 1.010000] ehci-exynos: EHCI EXYNOS driver [
>> 1.015000] unable to find transceiver of type USB2 PHY [
>> 1.020000] exynos-ehci 12580000.ehci: no platform data or
>> transceiver defined [ 1.025000] platform 12580000.ehci: Driver
>> exynos-ehci requests probe deferral
>
> First of all, do you have CONFIG_SAMSUNG_USB2PHY enabled in your
> kernel config? Also, see below.
>
>>
Yes, I have
ayaka@kotomi:~/workplace/exynos4412/kernel/linux-mainline$ cat
../build-linux-mainline/.config|grep CONFIG_SAMSUNG_USB2PHY
CONFIG_SAMSUNG_USB2PHY=y
>> ================================dts==================================
>>
>>
diff --git a/arch/arm/boot/dts/exynos4412-tiny4412.dts
>> b/arch/arm/boot/dts/exynos4412-tiny4412.dts new file mode 100644
>> index 0000000..c8d4cfa --- /dev/null +++
>> b/arch/arm/boot/dts/exynos4412-tiny4412.dts @@ -0,0 +1,176 @@
>> +/* + * Hardkernel's Exynos4412 based tiny4412 1306 board device
>> tree source + * + * Copyright (c) 2013 Tomoya Gitsufuki
>> <ayaka@xxxxxxxxxxxxxxxx> + * + * Device tree source file for
>> Friendyarm tiny4412 1306 board which is based on + * Samsung's
>> Exynos4412 SoC. + * + * This program is free software; you can
>> redistribute it and/or modify + * it under the terms of the GNU
>> General Public License version 2 as + * published by the Free
>> Software Foundation. +*/ + +/dts-v1/; +#include
>> "exynos4412.dtsi" + +/ { + model = "Friendly Arm Tiny4412 1306
>> board based on Exynos4412"; + compatible =
>> "friendlyarm,tiny4412-1306", "samsung,exynos4412"; + + memory { +
>> reg = <0x40000000 0x40000000>; + }; + + chosen { + bootargs
>> ="root=/dev/mmcblk0p1 rootfstype=ext4 rw console=ttySAC0,115200
>> init=/sbin/init"; + }; + + leds { + compatible = "gpio-leds"; +
>> led1 { + label = "led1:heart"; + gpios = <&gpm4 0 1>; +
>> default-state = "on"; + linux,default-trigger = "heartbeat"; +
>> }; + led2 { + label = "led2:mmc0"; + gpios = <&gpm4 1 1>; +
>> default-state = "on"; + linux,default-trigger = "mmc0"; + };
>> + + }; + + regulators { + compatible = "simple-bus"; +
>> #address-cells = <1>; + + vemmc_reg: regulator-0 { +
>> compatible = "regulator-fixed"; + regulator-name =
>> "VMEM_VDD_2.8V"; + regulator-min-microvolt = <2800000>; +
>> regulator-max-microvolt = <2800000>; + gpio = <&gpk0 2 0>; +
>> enable-active-high; + }; + + }; + + /* + mshc@12550000 { +
>> #address-cells = <1>; + #size-cells = <0>; + pinctrl-0 =
>> <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>; + pinctrl-names =
>> "default"; + status = "okay"; + + vmmc-supply = <&vemmc_reg>; +
>> clocks = <&clock 301>, <&clock 149>; + clocks-name = "dwmci",
>> "sclk_dwmci"; + clock-frequency = <400000000>; + + num-slots =
>> <1>; + supports-highspeed; + broken-cd; + fifo-depth =
>> <0x80>; + card-detect-delay = <200>; +
>> samsung,dw-mshc-sdr-timing = <2 3>; + samsung,dw-mshc-ddr-timing
>> = <1 2>; + + slot@0 { + reg = <0>; + bus-width = <8>; + +
>> }; + }; + */ + + rtc@10070000 { + status = "okay"; + }; + +
>> sdhci@12530000 { + bus-width = <4>; + pinctrl-0 = <&sd2_clk
>> &sd2_cmd &sd2_bus4 &sd2_cd>; + pinctrl-names = "default"; +
>> status = "okay"; + }; + sdhci@1254000 { + bus-width = <4>; +
>> pinctrl-0 = <&sd3_clk &sd3_cmd &sd3_bus4 &sd3_cd>; +
>> pinctrl-names = "default"; + status = "okay"; + }; + + usb_phy:
>> usbphy@125B0000 { + #address-cells = <1>; + #size-cells = <1>;
>> + compatible = "samsung,exynos4210-usbphy";
>
> This is not the compatible listed in [1]. Moreover, it looks like
> the compatible string for Exynos4x12 is not documented. According
> to driver code, it should be "samsung,exynos4x12-usb2phy".
>
> [1] Documentation/devicetree/bindings/usb/samsung-usbphy.txt
>
>> + reg = <0x12B0000 0x100>;
>
> The address should be 0x125B0000.
>
>> + ranges; + + clocks = <&clock 2>, <&clock 305>; + clock-names
>> = "xusbxti", "otg"; + usbphy-sys { + /* USB device and host
>> PHY_CONTROL registers */ + reg = <0x10020704 0x8>;
>
> reg should be <0x10020704 0xc 0x1001021c 0x4> on Exynos4x12.
>
> In general, this PHY driver is only preliminary and there is
> already work going on a completely new PHY driver that will cover
> full USB functionality present on Exynos 4 and should be much more
> reliable.
>
> The currently available one might or might not work for you, even
> after correcting the things I pointed above.
>
> Best regards, Tomasz
>
>
>
I have follow you, yes it doesn't work. I have tested it many times
before, the first address problem may is modified in one test.
So I shall wait the driver to be ready?
Thank you.
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