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Date: Sat, 10 Aug 2013 13:09:56 +0200
From: Pavel Machek <pavel@....cz>
To: Aaro Koskinen <aaro.koskinen@....fi>, olof@...om.net,
arnd@...db.de, Andrew Morton <akpm@...l.org>
Cc: Tony Lindgren <tony@...mide.com>, b-cousson@...com,
pali.rohar@...il.com, kernel list <linux-kernel@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-omap@...r.kernel.org, trivial@...nel.org
Subject: Re: [PATCH v2] N900: add device tree
On Fri 2013-08-02 01:43:55, Pavel Machek wrote:
> On Sun 2013-07-28 15:44:09, Pavel Machek wrote:
> > On Mon 2013-07-15 01:28:19, Aaro Koskinen wrote:
> > > Hi,
> > >
> > > On Sat, Jul 13, 2013 at 02:17:09PM +0200, Pavel Machek wrote:
> > > >
> > > > This adds device tree with neccessary support to boot with functional
> > > > video (on both emulator and real N900 device).
> > > >
> > > > Signed-off-by: Pavel Machek <pavel@....cz>
> > >
> > > You can also add:
> > >
> > > Signed-off-by: Aaro Koskinen <aaro.koskinen@....fi>
> >
> > Benoit, could you apply this? Tony said you are doing dts changes, and
> > the patch seems to be ready.
>
> Tony, Benoit was apparently abducted by aliens or something. Is there
> chance you could take the patch?
Hello, is there anybody out there?
There's nice and simple patch enabling device tree on n900, it is even
reviewed by Aaro, and it is neither applied nor are negative comments
coming? ...for a month...?
Tony also seen the patch and comment was "Benoit takes these", so I
assume it looks basically ok.
Benoit, you are supposed to maintain device tree for omap2.
[I wonder if this is clean-enough cause for "trivial in resubmit
mode?]
Pavel
---
This adds device tree with neccessary support to boot with functional
video (on both emulator and real N900 device).
Signed-off-by: Pavel Machek <pavel@....cz>
Signed-off-by: Aaro Koskinen <aaro.koskinen@....fi>
---
>From v1: Aaro wants just GPLv2, so I did that. I re-enabled parts that
can be enabled on 3.10, and tested it on that kernel.
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index f0895c5..1950aed 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -141,6 +141,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
omap3-devkit8000.dtb \
omap3-beagle-xm.dtb \
omap3-evm.dtb \
+ omap3-n900.dtb \
omap3-tobi.dtb \
omap3-igep0020.dtb \
omap3-igep0030.dtb \
diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
new file mode 100644
index 0000000..fb461bf
--- /dev/null
+++ b/arch/arm/boot/dts/omap3-n900.dts
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2013 Pavel Machek <pavel@....cz>
+ * Copyright 2013 Aaro Koskinen <aaro.koskinen@....fi>
+ *
+ * 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/ "omap34xx.dtsi"
+
+/ {
+ model = "Nokia N900";
+ compatible = "nokia,omap3-n900", "ti,omap3";
+
+ cpus {
+ cpu@0 {
+ cpu0-supply = <&vcc>;
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x80000000 0x10000000>; /* 256 MB */
+ };
+
+};
+
+&i2c1 {
+ clock-frequency = <2200000>;
+
+ twl: twl@48 {
+ reg = <0x48>;
+ interrupts = <7>; /* SYS_NIRQ cascaded to intc */
+ interrupt-parent = <&intc>;
+ };
+};
+
+/include/ "twl4030.dtsi"
+
+&twl_gpio {
+ ti,pullups = <0x0>;
+ ti,pulldowns = <0x03ff3f>; /* BIT(0..5) | BIT(8..17) */
+};
+
+&i2c2 {
+ clock-frequency = <400000>;
+};
+
+&i2c3 {
+ clock-frequency = <100000>;
+};
+
+&mmc1 {
+ status = "disabled";
+};
+
+&mmc2 {
+ status = "disabled";
+};
+
+&mmc3 {
+ status = "disabled";
+};
+
+&mcspi1 {
+ // For some reason, touchscreen is neccessary for screen to work at
+ // all on real hw. It works well without it on emulator.
+ //
+ // Also... order in the device tree actually matters here.
+ tsc2005@0 {
+ compatible = "tsc2005";
+ spi-max-frequency = <6000000>;
+ reg = <0>;
+ };
+ mipid@2 {
+ compatible = "acx565akm";
+ spi-max-frequency = <6000000>;
+ reg = <2>;
+ // turbo_mode = 0,
+ // cs_per_word = 0
+ };
+};
+
+&usb_otg_hs {
+ interface-type = <0>;
+ usb-phy = <&usb2_phy>;
+ mode = <2>;
+ power = <50>;
+};
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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