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cc89b7cf41
enable NVMXIP QSPI for sandbox 64-bit Adding two NVM XIP QSPI storage devices. Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org>
56 lines
1.2 KiB
Text
56 lines
1.2 KiB
Text
Specifying NVMXIP information for devices
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======================================
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QSPI XIP flash device nodes
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---------------------------
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Each flash device should have its own node.
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Each node must specify the following fields:
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1)
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compatible = "nvmxip,qspi";
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This allows to bind the flash device with the nvmxip_qspi driver
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If a platform has its own driver, please provide your own compatible
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string.
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2)
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reg = /bits/ 64 <0x08000000 0x00200000>;
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The start address and size of the flash device. The values give here are an
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example (when the cell size is 2).
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When cell size is 1, the reg field looks like this:
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reg = <0x08000000 0x00200000>;
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3)
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lba_shift = <9>;
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The number of bit shifts used to calculate the size in bytes of one block.
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In this example the block size is 1 << 9 = 2 ^ 9 = 512 bytes
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4)
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lba = <4096>;
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The number of blocks.
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Example of multiple flash devices
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----------------------------------------------------
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nvmxip-qspi1@08000000 {
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compatible = "nvmxip,qspi";
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reg = /bits/ 64 <0x08000000 0x00200000>;
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lba_shift = <9>;
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lba = <4096>;
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};
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nvmxip-qspi2@08200000 {
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compatible = "nvmxip,qspi";
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reg = /bits/ 64 <0x08200000 0x00100000>;
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lba_shift = <9>;
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lba = <2048>;
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};
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