Op 6 sep. 2013, om 09:10 heeft Koen Kooi <koen@xxxxxxxxxxxxxxxxxxxxx> het volgende geschreven:
>
> Op 6 sep. 2013, om 08:57 heeft George Cherian <george.cherian@xxxxxx> het volgende geschreven:
>
>> On 9/6/2013 12:03 PM, Koen Kooi wrote:
>>> The BeagleBone Black is basically a regular BeagleBone with eMMC and HDMI added,
>>> so create a common dtsi both can use. MMC support for AM335x still isn't in, so
>>> only the LDO change has been added.
>>>
>>> Signed-off-by: Koen Kooi <koen@xxxxxxxxxxxxxxxxxxxxx>
>>> ---
>>> .../{am335x-bone.dts => am335x-bone-common.dtsi} | 3 -
>>> arch/arm/boot/dts/am335x-bone.dts | 256 +--------------------
>>> arch/arm/boot/dts/am335x-boneblack.dts | 18 ++
>>> 3 files changed, 19 insertions(+), 258 deletions(-)
>>> copy arch/arm/boot/dts/{am335x-bone.dts => am335x-bone-common.dtsi} (99%)
>>> create mode 100644 arch/arm/boot/dts/am335x-boneblack.dts
>> How did you test am335x-boneblack.dtb? where are the Makefile changes for boneblack?
>
> Ah, I missed the makefile in my commit. I have a bunch of other patches on top to make more stuff work.
>
> [..]
>
>>>
>>> --- /dev/null
>>> +++ b/arch/arm/boot/dts/am335x-boneblack.dts
>>> @@ -0,0 +1,18 @@
>>> +/*
>>> + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
>>> + *
>>> + * 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 "am33xx.dtsi"
>> Why cant we add am33xx.dtsi in am335x-bone-common.dtsi ?
>
> That didn't work when I tried it. It did work before the preprocessor changes when using /include/
>
>>> +#include "am335x-bone-common.dtsi"
>>> +
>>> +&ldo3_reg {
>>> + regulator-min-microvolt = <1800000>;
>>> + regulator-max-microvolt = <1800000>;
>>> + regulator-always-on;
>>> +};
>>> +
>> With this ldo values mmc was not working for me on Boneblack.
>> got it working with
>>
>> &ldo3_reg {
>> regulator-min-microvolt = <1800000>;
>> regulator-max-microvolt = <3300000>;
>> regulator-always-on;
>> };
>
> That LDO is shared, the other consumer will get fried if you use 3.3V. I forget if it's DDR3 or HDMI.
On the black the LDOs changed, so for mmc (which (*$)@()$@) still isn't in mainline) you need:
diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
index e76d575..ae90a30 100644
--- a/arch/arm/boot/dts/am335x-bone-common.dtsi
+++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
@@ -362,6 +362,13 @@
regulator-always-on;
};
};
+
+ vmmcsd_fixed: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "vmmcsd_fixed";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
};
&cpsw_emac0 {
diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
index b4237fc..e092a61 100644
--- a/arch/arm/boot/dts/am335x-boneblack.dts
+++ b/arch/arm/boot/dts/am335x-boneblack.dts
@@ -16,7 +16,12 @@
regulator-always-on;
};
-&mmc2 {
+&mmc1 {
+ vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&mmc2 {
+ vmmc-supply = <&vmmcsd_fixed>;
pinctrl-names = "default";
pinctrl-0 = <&emmc_pins>;
vmmc-supply = <&ldo3_reg>;
--
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