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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 22:04:58 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 22:04:58 -0400
commit45158894d4d6704afbb4cefe55e5f6ca279fe12a (patch)
treed57e745e2d0848d75cd4a46ca04178b16f186b50 /Documentation/powerpc/dts-bindings/fsl/cpm_qe/cpm/i2c.txt
parent89a93f2f4834f8c126e8d9dd6b368d0b9e21ec3d (diff)
parent84c3d4aaec3338201b449034beac41635866bddf (diff)
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (249 commits) powerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES powerpc: Fix a build problem on ppc32 with new DMA_ATTRs ibm_newemac: Add MII mode support to the EMAC RGMII bridge. powerpc: Don't spin on sync instruction at boot time powerpc: Add VSX load/store alignment exception handler powerpc: fix giveup_vsx to save registers correctly powerpc: support for latencytop powerpc: Remove unnecessary condition when sanity-checking WIMG bits powerpc: Add PPC_FEATURE_PSERIES_PERFMON_COMPAT powerpc: Add driver for Barrier Synchronization Register powerpc: mman.h export fixups powerpc/fsl: update crypto node definition and device tree instances powerpc/fsl: Refactor device bindings powerpc/85xx: Minor fixes for 85xxds and 8536ds board. powerpc: Add 82xx/83xx/86xx to 6xx Multiplatform powerpc/85xx: publish of device for cds platforms powerpc/booke: don't reinitialize time base powerpc/86xx: Refactor pic init powerpc/CPM: Add i2c pins to dts and board setup cpm_uart: Support uart_wait_until_sent() ...
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1* I2C
2
3The I2C controller is expressed as a bus under the CPM node.
4
5Properties:
6- compatible : "fsl,cpm1-i2c", "fsl,cpm2-i2c"
7- reg : On CPM2 devices, the second resource doesn't specify the I2C
8 Parameter RAM itself, but the I2C_BASE field of the CPM2 Parameter RAM
9 (typically 0x8afc 0x2).
10- #address-cells : Should be one. The cell is the i2c device address with
11 the r/w bit set to zero.
12- #size-cells : Should be zero.
13- clock-frequency : Can be used to set the i2c clock frequency. If
14 unspecified, a default frequency of 60kHz is being used.
15The following two properties are deprecated. They are only used by legacy
16i2c drivers to find the bus to probe:
17- linux,i2c-index : Can be used to hard code an i2c bus number. By default,
18 the bus number is dynamically assigned by the i2c core.
19- linux,i2c-class : Can be used to override the i2c class. The class is used
20 by legacy i2c device drivers to find a bus in a specific context like
21 system management, video or sound. By default, I2C_CLASS_HWMON (1) is
22 being used. The definition of the classes can be found in
23 include/i2c/i2c.h
24
25Example, based on mpc823:
26
27 i2c@860 {
28 compatible = "fsl,mpc823-i2c",
29 "fsl,cpm1-i2c";
30 reg = <0x860 0x20 0x3c80 0x30>;
31 interrupts = <16>;
32 interrupt-parent = <&CPM_PIC>;
33 fsl,cpm-command = <0x10>;
34 #address-cells = <1>;
35 #size-cells = <0>;
36
37 rtc@68 {
38 compatible = "dallas,ds1307";
39 reg = <0x68>;
40 };
41 };