The only content of this file is CONFIG options which are no-longer present in U-Boot. Drop it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: York Sun <york.sun@nxp.com>master
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U-Boot for Freescale i.MX31 |
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This file contains information for the port of U-Boot to the Freescale |
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i.MX31 SoC. |
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1. CONFIGURATION OPTIONS/SETTINGS |
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--------------------------------- |
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1.1 Configuration of MC13783 SPI bus |
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------------------------------------ |
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The power management companion chip MC13783 is connected to the |
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i.MX31 via an SPI bus. Use the following configuration options |
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to setup the bus and chip select used for a particular board. |
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CONFIG_MC13783_SPI_BUS -- defines the SPI bus the MC13783 is connected to. |
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Note that 0 is CSPI1, 1 is CSPI2 and 2 is CSPI3. |
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CONFIG_MC13783_SPI_CS -- define the chip select the MC13783 s connected to. |
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1.2 Timer precision |
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------------------- |
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CONFIG_MX31_TIMER_HIGH_PRECISION |
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Enable higher precision timer. The low-precision timer |
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(default) provides approximately 4% error, whereas the |
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high-precision timer is about 0.4% accurate. The extra |
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accuracy is achieved at the cost of higher computational |
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overhead, which, in places where time is measured, should |
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not be critical, so, it should be safe to enable this |
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option. |
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