From: Wolfgang Grandegger <wg@grandegger.com>
To: Linux-i2c@vger.kernel.org
Cc: Devicetree-discuss@lists.ozlabs.org,
Linuxppc-dev@lists.ozlabs.org, Wolfgang Grandegger <wg@denx.de>,
Ben Dooks <ben-linux@fluff.org>
Subject: [PATCH v4 3/3] powerpc: doc/dts-bindings: update doc of FSL I2C bindings
Date: Thu, 28 Jan 2010 14:25:41 +0100 [thread overview]
Message-ID: <1264685141-26391-4-git-send-email-wg@grandegger.com> (raw)
In-Reply-To: <1264685141-26391-3-git-send-email-wg@grandegger.com>
From: Wolfgang Grandegger <wg@denx.de>
This patch adds the MPC5121 to the list of supported devices,
enhances the doc of the "clock-frequency" property and removes
the obsolete "cell-index" property from the example nodes.
Furthermore and example for the MPC5121 has been added.
Signed-off-by: Wolfgang Grandegger <wg@denx.de>
---
Documentation/powerpc/dts-bindings/fsl/i2c.txt | 30 +++++++++++++++++++----
1 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/Documentation/powerpc/dts-bindings/fsl/i2c.txt b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
index b6d2e21..2f62dae 100644
--- a/Documentation/powerpc/dts-bindings/fsl/i2c.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
@@ -9,8 +9,9 @@ Recommended properties :
- compatible : compatibility list with 2 entries, the first should
be "fsl,CHIP-i2c" where CHIP is the name of a compatible processor,
- e.g. mpc8313, mpc8543, mpc8544, mpc5200 or mpc5200b. The second one
- should be "fsl-i2c".
+ e.g. mpc8313, mpc8543, mpc8544, mpc5121, mpc5200 or mpc5200b. The
+ second one should be "fsl-i2c". For the mpc5121, an additional node
+ "fsl,mpc5121-i2c-ctrl" is required as shown in the example below.
- interrupts : <a b> where a is the interrupt number and b is a
field that represents an encoding of the sense and level
information for the interrupt. This should be encoded based on
@@ -20,29 +21,46 @@ Recommended properties :
services interrupts for this device.
- fsl,preserve-clocking : boolean; if defined, the clock settings
from the bootloader are preserved (not touched).
- - clock-frequency : desired I2C bus clock frequency in Hz.
+ - clock-frequency : desired I2C bus clock frequency in Hz. If this
+ property and "fsl,preserve-clocking" is not defined, a safe fixed
+ clock divider value is used (resulting in a small clock frequency).
Examples :
+ /* MPC5121 based board */
+ i2c@1740 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,mpc5121-i2c", "fsl-i2c";
+ reg = <0x1740 0x20>;
+ interrupts = <11 0x8>;
+ interrupt-parent = <&ipic>;
+ clock-frequency = <100000>;
+ };
+
+ i2ccontrol@1760 {
+ compatible = "fsl,mpc5121-i2c-ctrl";
+ reg = <0x1760 0x8>;
+ };
+
+ /* MPC5200B based board */
i2c@3d00 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,mpc5200b-i2c","fsl,mpc5200-i2c","fsl-i2c";
- cell-index = <0>;
reg = <0x3d00 0x40>;
interrupts = <2 15 0>;
interrupt-parent = <&mpc5200_pic>;
fsl,preserve-clocking;
};
+ /* MPC8544 base board */
i2c@3100 {
#address-cells = <1>;
#size-cells = <0>;
- cell-index = <1>;
compatible = "fsl,mpc8544-i2c", "fsl-i2c";
reg = <0x3100 0x100>;
interrupts = <43 2>;
interrupt-parent = <&mpic>;
clock-frequency = <400000>;
};
-
--
1.6.2.5
next prev parent reply other threads:[~2010-01-28 13:25 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-28 13:25 [PATCH v4 0/3] i2c-mpc: add support for the Freescale MPC512x and other fixes Wolfgang Grandegger
2010-01-28 13:25 ` [PATCH v4 1/3] i2c-mpc: use __devinit[data] for initialization functions and data Wolfgang Grandegger
2010-01-28 13:25 ` [PATCH v4 2/3] i2c-mpc: add support for the MPC512x processors from Freescale Wolfgang Grandegger
2010-01-28 13:25 ` Wolfgang Grandegger [this message]
2010-01-29 16:26 ` [PATCH v4 3/3] powerpc: doc/dts-bindings: update doc of FSL I2C bindings Wolfram Sang
2010-02-09 17:50 ` Grant Likely
2010-02-09 18:57 ` Wolfgang Grandegger
2010-02-09 19:23 ` Wolfgang Grandegger
2010-02-09 22:15 ` Grant Likely
2010-01-29 16:24 ` [PATCH v4 2/3] i2c-mpc: add support for the MPC512x processors from Freescale Wolfram Sang
2010-02-09 17:45 ` Grant Likely
2010-01-29 16:15 ` [PATCH v4 1/3] i2c-mpc: use __devinit[data] for initialization functions and data Wolfram Sang
2010-02-09 17:41 ` Grant Likely
2010-02-10 10:09 ` Wolfgang Grandegger
2010-02-10 10:32 ` Stephen Rothwell
2010-02-10 10:53 ` Wolfgang Grandegger
2010-02-10 14:14 ` Grant Likely
2010-02-10 14:45 ` Wolfgang Grandegger
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