xref: /rk3399_rockchip-uboot/doc/device-tree-bindings/spi/spi-cadence.txt (revision f448c5d3200372fa73f340144d013fdecf4e2f1f)
1*8097cba8SVikas ManochaCadence QSPI controller device tree bindings
2*8097cba8SVikas Manocha--------------------------------------------
3*8097cba8SVikas Manocha
4*8097cba8SVikas ManochaRequired properties:
5*8097cba8SVikas Manocha- compatible		: should be "cadence,qspi".
6*8097cba8SVikas Manocha- reg			: 1.Physical base address and size of SPI registers map.
7*8097cba8SVikas Manocha			  2. Physical base address & size of NOR Flash.
8*8097cba8SVikas Manocha- clocks		: Clock phandles (see clock bindings for details).
9*8097cba8SVikas Manocha- sram-size		: spi controller sram size.
10*8097cba8SVikas Manocha- status		: enable in requried dts.
11*8097cba8SVikas Manocha
12*8097cba8SVikas Manochaconnected flash properties
13*8097cba8SVikas Manocha--------------------------
14*8097cba8SVikas Manocha
15*8097cba8SVikas Manocha- spi-max-frequency	: Max supported spi frequency.
16*8097cba8SVikas Manocha- page-size		: Flash page size.
17*8097cba8SVikas Manocha- block-size		: Flash memory block size.
18*8097cba8SVikas Manocha- tshsl-ns		: Added delay in master reference clocks (ref_clk) for
19*8097cba8SVikas Manocha			  the length that the master mode chip select outputs
20*8097cba8SVikas Manocha			  are de-asserted between transactions.
21*8097cba8SVikas Manocha- tsd2d-ns		: Delay in master reference clocks (ref_clk) between one
22*8097cba8SVikas Manocha			  chip select being de-activated and the activation of
23*8097cba8SVikas Manocha			  another.
24*8097cba8SVikas Manocha- tchsh-ns		: Delay in master reference clocks between last bit of
25*8097cba8SVikas Manocha			  current transaction and de-asserting the device chip
26*8097cba8SVikas Manocha			  select (n_ss_out).
27*8097cba8SVikas Manocha- tslch-ns		: Delay in master reference clocks between setting
28*8097cba8SVikas Manocha			  n_ss_out low and first bit transfer
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