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Diffstat (limited to 'Platform/Marvell/Documentation/PortingGuide/I2c.txt')
-rw-r--r-- | Platform/Marvell/Documentation/PortingGuide/I2c.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Platform/Marvell/Documentation/PortingGuide/I2c.txt b/Platform/Marvell/Documentation/PortingGuide/I2c.txt new file mode 100644 index 0000000000..020ffb4f1b --- /dev/null +++ b/Platform/Marvell/Documentation/PortingGuide/I2c.txt @@ -0,0 +1,20 @@ +1. Porting I2C driver to a new SOC
+----------------------------------
+In order to enable driver on a new platform, following steps need to be taken:
+ - add following line to .dsc file:
+ Platform/Marvell/Drivers/I2c/MvI2cDxe/MvI2cDxe.inf
+ - add following line to .fdf file:
+ INF Platform/Marvell/Drivers/I2c/MvI2cDxe/MvI2cDxe.inf
+ - add PCDs with relevant values to .dsc file:
+ gMarvellTokenSpaceGuid.PcdI2cSlaveAddresses|{ 0x50, 0x57 }
+ (addresses of I2C slave devices on bus)
+ gMarvellTokenSpaceGuid.PcdI2cSlaveBuses|{ 0x0, 0x0 }
+ (buses to which accoring slaves are attached)
+ gMarvellTokenSpaceGuid.PcdI2cBusCount|2
+ (number of SoC's I2C buses)
+ gMarvellTokenSpaceGuid.PcdI2cBaseAddresses|L"0xF2701000;0xF2701100"
+ (base addresses of I2C controller buses)
+ gMarvellTokenSpaceGuid.PcdI2cClockFrequency|200000000
+ (I2C host controller clock frequency)
+ gMarvellTokenSpaceGuid.PcdI2cBaudRate|100000
+ (baud rate used in I2C transmission)
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