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@@ -45,3 +45,22 @@ enable QE-TDM for linux kernel, set "qe;tdm" in hwconfig. Syntax is as below
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'setenv hwconfig qe' to enable QE UEC/UART and disable Nor-Flash/CPLD.
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'setenv hwconfig 'qe;tdm'' to enalbe QE TDM and disable Nor-Flash/CPLD.
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+
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+Device tree support and how to enable it for different configs
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+--------------------------------------------------------------
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+Device tree support is available for p1020rdb for below mentioned boot,
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+1. NOR Boot
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+2. NAND Boot
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+3. SD Boot
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+4. SPIFLASH Boot
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+
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+To enable device tree support for other boot, below configs need to be
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+enabled in relative defconfig file,
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+1. CONFIG_DEFAULT_DEVICE_TREE="p1020rdb" (Change default device tree name if required)
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+2. CONFIG_OF_CONTROL
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+3. CONFIG_MPC85XX_HAVE_RESET_VECTOR if reset vector is located at
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+ CONFIG_RESET_VECTOR_ADDRESS - 0xffc
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+
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+If device tree support is enabled in defconfig,
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+1. use 'u-boot-with-dtb.bin' for NOR boot.
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+2. use 'u-boot-with-spl.bin' for other boot.
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