diff options
| author | Vikas Manocha <vikas.manocha@st.com> | 2015-07-02 18:29:46 -0700 |
|---|---|---|
| committer | Jagan Teki <jteki@openedev.com> | 2015-07-03 13:50:53 +0530 |
| commit | 8097cba809d8c40d8fe72f792c7dc0644c845a32 (patch) | |
| tree | b0d58f4d354f1b459e8175b3775fde61bbc00b96 | |
| parent | 70bb2b141573afd75cbc4b448e430814f3990b28 (diff) | |
spi: cadence_qspi: add device tree binding doc
This patch adds the device tree binding doc for the cadence qspi controller &
also removes the not needed properties from the stv0991 device tree.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
| -rw-r--r-- | arch/arm/dts/stv0991.dts | 5 | ||||
| -rw-r--r-- | doc/device-tree-bindings/spi/spi-cadence.txt | 28 |
2 files changed, 28 insertions, 5 deletions
diff --git a/arch/arm/dts/stv0991.dts b/arch/arm/dts/stv0991.dts index 556df821e4..fa3fd641b2 100644 --- a/arch/arm/dts/stv0991.dts +++ b/arch/arm/dts/stv0991.dts @@ -32,11 +32,7 @@ reg = <0x80203000 0x100>, <0x40000000 0x1000000>; clocks = <3750000>; - ext-decoder = <0>; /* external decoder */ - num-cs = <4>; - fifo-depth = <256>; sram-size = <256>; - bus-num = <0>; status = "okay"; flash0: n25q32@0 { @@ -48,7 +44,6 @@ m25p,fast-read; page-size = <256>; block-size = <16>; /* 2^16, 64KB */ - read-delay = <4>; /* delay value in read data capture register */ tshsl-ns = <50>; tsd2d-ns = <50>; tchsh-ns = <4>; diff --git a/doc/device-tree-bindings/spi/spi-cadence.txt b/doc/device-tree-bindings/spi/spi-cadence.txt new file mode 100644 index 0000000000..c1e2233d7c --- /dev/null +++ b/doc/device-tree-bindings/spi/spi-cadence.txt @@ -0,0 +1,28 @@ +Cadence QSPI controller device tree bindings +-------------------------------------------- + +Required properties: +- compatible : should be "cadence,qspi". +- reg : 1.Physical base address and size of SPI registers map. + 2. Physical base address & size of NOR Flash. +- clocks : Clock phandles (see clock bindings for details). +- sram-size : spi controller sram size. +- status : enable in requried dts. + +connected flash properties +-------------------------- + +- spi-max-frequency : Max supported spi frequency. +- page-size : Flash page size. +- block-size : Flash memory block size. +- tshsl-ns : Added delay in master reference clocks (ref_clk) for + the length that the master mode chip select outputs + are de-asserted between transactions. +- tsd2d-ns : Delay in master reference clocks (ref_clk) between one + chip select being de-activated and the activation of + another. +- tchsh-ns : Delay in master reference clocks between last bit of + current transaction and de-asserting the device chip + select (n_ss_out). +- tslch-ns : Delay in master reference clocks between setting + n_ss_out low and first bit transfer |