Re: [PATCHv4 7/7] ARM: dts: Add device tree sources for Exynos3250

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On 26.04.2014 02:51, Tomasz Figa wrote:
Hi Chanwoo,

On 25.04.2014 03:16, Chanwoo Choi wrote:
From: Tomasz Figa <t.figa@xxxxxxxxxxx>

This patch add new exynos3250.dtsi to support Exynos3250 SoC based on
Cortex-A7
dual core and includes following dt nodes:

- GIC interrupt controller
- Pinctrl to control GPIOs
- Clock controller
- CPU information (Cortex-A7 dual core)
- UART to support serial port
- MCT (Multi Core Timer)
- ADC (Analog Digital Converter)
- I2C/SPI bus
- Power domain
- PMU (Performance Monitoring Unit)
- MSHC (Mobile Storage Host Controller)
- PWM (Pluse Width Modulation)
- AMBA bus

Signed-off-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Signed-off-by: Hyunhee Kim <hyunhee.kim@xxxxxxxxxxx>
Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Ben Dooks <ben-linux@xxxxxxxxx>
Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
---
  arch/arm/boot/dts/exynos3250-pinctrl.dtsi | 477 +++++++++++++++
  arch/arm/boot/dts/exynos3250.dtsi         | 405 +++++++++++++
  arch/arm/boot/dts/exynos4212-tizenw.dts   | 926
++++++++++++++++++++++++++++++
  3 files changed, 1808 insertions(+)
  create mode 100644 arch/arm/boot/dts/exynos3250-pinctrl.dtsi
  create mode 100644 arch/arm/boot/dts/exynos3250.dtsi
  create mode 100644 arch/arm/boot/dts/exynos4212-tizenw.dts

diff --git a/arch/arm/boot/dts/exynos3250-pinctrl.dtsi
b/arch/arm/boot/dts/exynos3250-pinctrl.dtsi
new file mode 100644
index 0000000..976490b
--- /dev/null
+++ b/arch/arm/boot/dts/exynos3250-pinctrl.dtsi
@@ -0,0 +1,477 @@
+/*
+ * Samsung's Exynos3250 SoCs pin-mux and pin-config device tree source
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ *        http://www.samsung.com
+ *
+ * Samsung's Exynos3250 SoCs pin-mux and pin-config optiosn are
listed as device
+ * tree nodes are listed in this file.
+ *
+ * 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.
+*/
+
+/ {
+    pinctrl@11400000 {

Could you use references instead of re-specifying the whole tree
hierarchy in every file a node is used?

Instead of

/ {
     pinctrl@11400000 {

     };
};

one may simply use

&pinctrl_0 {

};

You might just need to change the location of #include
"exynos3250-pinctrl.dtsi" from top of exynos3250.dtsi to bottom of it.

Oh, well, you also should move all nodes of on-SoC devices under a simple-bus node called soc. You can see the patch adding dts file for Exynos5260 for an example [1].

[1] http://thread.gmane.org/gmane.linux.kernel.samsung-soc/29360/focus=29361

Best regards,
Tomasz
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