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| author | Serge Semin <fancer.lancer@gmail.com> | 2017-01-13 15:16:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-19 11:39:57 +0100 |
| commit | a0227cf344e2a33bd4454cf09e56a2a9a8fbfc1d (patch) | |
| tree | f7f5c2b1e83c28753e7a3132b47b82f12e5e7324 /Documentation | |
| parent | cfad6425382ec81acd073fdf24361e1c30b4cb36 (diff) | |
| download | linux-a0227cf344e2a33bd4454cf09e56a2a9a8fbfc1d.tar.bz2 | |
eeprom: Add IDT 89HPESx driver bindings file
IDT 89HPESx PCIe-switches exposes SMBus interface to have an access to
the device CSRs and EEPROM. So to properly utilize the interface
functionality, developer should declare a valid dts-file node, which
would refer to the corresponding 89HPESx device.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/misc/idt_89hpesx.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/misc/idt_89hpesx.txt b/Documentation/devicetree/bindings/misc/idt_89hpesx.txt new file mode 100644 index 000000000000..b9093b79ab7d --- /dev/null +++ b/Documentation/devicetree/bindings/misc/idt_89hpesx.txt @@ -0,0 +1,44 @@ +EEPROM / CSR SMBus-slave interface of IDT 89HPESx devices + +Required properties: + - compatible : should be "<manufacturer>,<type>" + Basically there is only one manufacturer: idt, but some + compatible devices may be produced in future. Following devices + are supported: 89hpes8nt2, 89hpes12nt3, 89hpes24nt6ag2, + 89hpes32nt8ag2, 89hpes32nt8bg2, 89hpes12nt12g2, 89hpes16nt16g2, + 89hpes24nt24g2, 89hpes32nt24ag2, 89hpes32nt24bg2; + 89hpes12n3, 89hpes12n3a, 89hpes24n3, 89hpes24n3a; + 89hpes32h8, 89hpes32h8g2, 89hpes48h12, 89hpes48h12g2, + 89hpes48h12ag2, 89hpes16h16, 89hpes22h16, 89hpes22h16g2, + 89hpes34h16, 89hpes34h16g2, 89hpes64h16, 89hpes64h16g2, + 89hpes64h16ag2; + 89hpes12t3g2, 89hpes24t3g2, 89hpes16t4, 89hpes4t4g2, + 89hpes10t4g2, 89hpes16t4g2, 89hpes16t4ag2, 89hpes5t5, + 89hpes6t5, 89hpes8t5, 89hpes8t5a, 89hpes24t6, 89hpes6t6g2, + 89hpes24t6g2, 89hpes16t7, 89hpes32t8, 89hpes32t8g2, + 89hpes48t12, 89hpes48t12g2. + - reg : I2C address of the IDT 89HPESx device. + +Optionally there can be EEPROM-compatible subnode: + - compatible: There are five EEPROM devices supported: 24c32, 24c64, 24c128, + 24c256 and 24c512 differed by size. + - reg: Custom address of EEPROM device (If not specified IDT 89HPESx + (optional) device will try to communicate with EEPROM sited by default + address - 0x50) + - read-only : Parameterless property disables writes to the EEPROM + (optional) + +Example: + idt@60 { + compatible = "idt,89hpes32nt8ag2"; + reg = <0x74>; + #address-cells = <1>; + #size-cells = <0>; + + eeprom@50 { + compatible = "onsemi,24c64"; + reg = <0x50>; + read-only; + }; + }; + |