xref: /OK3568_Linux_fs/u-boot/doc/device-tree-bindings/spi/spi-cadence.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunCadence QSPI controller device tree bindings
2*4882a593Smuzhiyun--------------------------------------------
3*4882a593Smuzhiyun
4*4882a593SmuzhiyunRequired properties:
5*4882a593Smuzhiyun- compatible		: should be "cadence,qspi".
6*4882a593Smuzhiyun- reg			: 1.Physical base address and size of SPI registers map.
7*4882a593Smuzhiyun			  2. Physical base address & size of NOR Flash.
8*4882a593Smuzhiyun- clocks		: Clock phandles (see clock bindings for details).
9*4882a593Smuzhiyun- sram-size		: spi controller sram size.
10*4882a593Smuzhiyun- status		: enable in requried dts.
11*4882a593Smuzhiyun
12*4882a593Smuzhiyunconnected flash properties
13*4882a593Smuzhiyun--------------------------
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun- spi-max-frequency	: Max supported spi frequency.
16*4882a593Smuzhiyun- page-size		: Flash page size.
17*4882a593Smuzhiyun- block-size		: Flash memory block size.
18*4882a593Smuzhiyun- tshsl-ns		: Added delay in master reference clocks (ref_clk) for
19*4882a593Smuzhiyun			  the length that the master mode chip select outputs
20*4882a593Smuzhiyun			  are de-asserted between transactions.
21*4882a593Smuzhiyun- tsd2d-ns		: Delay in master reference clocks (ref_clk) between one
22*4882a593Smuzhiyun			  chip select being de-activated and the activation of
23*4882a593Smuzhiyun			  another.
24*4882a593Smuzhiyun- tchsh-ns		: Delay in master reference clocks between last bit of
25*4882a593Smuzhiyun			  current transaction and de-asserting the device chip
26*4882a593Smuzhiyun			  select (n_ss_out).
27*4882a593Smuzhiyun- tslch-ns		: Delay in master reference clocks between setting
28*4882a593Smuzhiyun			  n_ss_out low and first bit transfer
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