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| author | Wolfgang Grandegger <wg@grandegger.com> | 2009-04-07 10:20:56 +0200 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2009-04-08 00:12:11 -0500 |
| commit | 8d82ffd15e59febf2c597067a777526958b7f769 (patch) | |
| tree | 5da1772fff13b56149cf6dd6a2b70604f0de005b | |
| parent | 52ce67f157f8c5623524dc6c5b2ddd6a0d2aa774 (diff) | |
| download | linux-8d82ffd15e59febf2c597067a777526958b7f769.tar.gz linux-8d82ffd15e59febf2c597067a777526958b7f769.tar.bz2 linux-8d82ffd15e59febf2c597067a777526958b7f769.zip | |
powerpc: Document new FSL I2C bindings and cleanup
This patch documents the new bindings for the MPC I2C bus driver.
Furthermore, it removes obsolete FSL device related definitions
for I2C.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| -rw-r--r-- | Documentation/powerpc/dts-bindings/fsl/i2c.txt | 46 | ||||
| -rw-r--r-- | include/linux/fsl_devices.h | 4 |
2 files changed, 31 insertions, 19 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/i2c.txt b/Documentation/powerpc/dts-bindings/fsl/i2c.txt index d0ab33e21fe6..b6d2e21474f9 100644 --- a/Documentation/powerpc/dts-bindings/fsl/i2c.txt +++ b/Documentation/powerpc/dts-bindings/fsl/i2c.txt @@ -7,8 +7,10 @@ Required properties : Recommended properties : - - compatible : Should be "fsl-i2c" for parts compatible with - Freescale I2C specifications. + - 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". - 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 @@ -16,17 +18,31 @@ Recommended properties : controller you have. - interrupt-parent : the phandle for the interrupt controller that services interrupts for this device. - - dfsrr : boolean; if defined, indicates that this I2C device has - a digital filter sampling rate register - - fsl5200-clocking : boolean; if defined, indicated that this device - uses the FSL 5200 clocking mechanism. - -Example : - i2c@3000 { - interrupt-parent = <40000>; - interrupts = <1b 3>; - reg = <3000 18>; - device_type = "i2c"; - compatible = "fsl-i2c"; - dfsrr; + - 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. + +Examples : + + 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; }; + + 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>; + }; + diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h index f2a78b5e8b55..43fc95d822d5 100644 --- a/include/linux/fsl_devices.h +++ b/include/linux/fsl_devices.h @@ -43,10 +43,6 @@ * */ -/* Flags related to I2C device features */ -#define FSL_I2C_DEV_SEPARATE_DFSRR 0x00000001 -#define FSL_I2C_DEV_CLOCK_5200 0x00000002 - enum fsl_usb2_operating_modes { FSL_USB2_MPH_HOST, FSL_USB2_DR_HOST, |