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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-25 14:43:54 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-25 14:43:54 -0800 |
commit | 0051db82182bfd80d6c76982bcb36b09eb338a89 (patch) | |
tree | 5e58aa94cd1f77ef7a4e7b15cfbfac49760ff4a9 /Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt | |
parent | Merge tag 'regulator-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator (diff) | |
parent | Merge remote-tracking branches 'spi/topic/mem' and 'spi/topic/mtd' into spi-next (diff) | |
download | linux-dev-0051db82182bfd80d6c76982bcb36b09eb338a89.tar.xz linux-dev-0051db82182bfd80d6c76982bcb36b09eb338a89.zip |
Merge tag 'spi-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"The main thing this release has been a lot of work on the integration
with SPI NOR flashes, there's been some specific support for a while
for controller features designed to make them perform better but it's
not worked out as well as hoped so the interface has been redesigned
in a way that will hopefully do better - it's already been adopted by
a number of additional controllers so things are looking good.
Otherwise most of the work has been driver specific:
- Support for better integration with NOR flashes from Boris
Brezillon and Yogesh Narayan Gaur plus usage of it in several
drivers.
- A big cleanup of the Rockchip driver from Emil Renner Berthing.
- Lots of performance improvements for bcm2835 from Lukas Wunner.
- Slave mode support for pxa2xx from Lubomir Rintel.
- Support for Macronix MXIC, Mediatek MT7629 and MT8183, NPCM PSPI,
and Renesas r8a77470"
* tag 'spi-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (90 commits)
spi: sh-msiof: Reduce the number of times write to and perform the transmission from FIFO
spi: sh-msiof: Add r8a774c0 support
doc: lpspi: Document DT bindings for LPSPI slave mode
spi: lpspi: Let watermark change with send data length
spi: lpspi: Add slave mode support
spi: lpspi: Replace all "master" with "controller"
spi: imx: drop useless member speed_hz from driver data struct
spi: imx: rename config callback and add useful parameters
spi: imx: style fixes
spi: imx: mx51-ecspi: Move some initialisation to prepare_message hook.
spi: imx: add a device specific prepare_message callback
mtd: atmel-quadspi: disallow building on ebsa110
spi: Update NPCM PSPI controller documentation
spi: npcm: Modify pspi send function
spi: Use of_node_name_eq for node name comparisons
spi: dw-mmio: add ACPI support
spi: bcm2835: Synchronize with callback on DMA termination
spi: bcm2835: Speed up FIFO access if fill level is known
spi: bcm2835: Polish transfer of DMA prologue
spi: spi-mem: add support for octal mode I/O data transfer
...
Diffstat (limited to 'Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt')
-rw-r--r-- | Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt b/Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt new file mode 100644 index 000000000000..1fd9a4406a1d --- /dev/null +++ b/Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt @@ -0,0 +1,43 @@ +Nuvoton NPCM Peripheral Serial Peripheral Interface(PSPI) controller driver + +Nuvoton NPCM7xx SOC support two PSPI channels. + +Required properties: + - compatible : "nuvoton,npcm750-pspi" for NPCM7XX BMC + - #address-cells : should be 1. see spi-bus.txt + - #size-cells : should be 0. see spi-bus.txt + - specifies physical base address and size of the register. + - interrupts : contain PSPI interrupt. + - clocks : phandle of PSPI reference clock. + - clock-names: Should be "clk_apb5". + - pinctrl-names : a pinctrl state named "default" must be defined. + - pinctrl-0 : phandle referencing pin configuration of the device. + - cs-gpios: Specifies the gpio pins to be used for chipselects. + See: Documentation/devicetree/bindings/spi/spi-bus.txt + +Optional properties: +- clock-frequency : Input clock frequency to the PSPI block in Hz. + Default is 25000000 Hz. + +Aliases: +- All the SPI controller nodes should be represented in the aliases node using + the following format 'spi{n}' withe the correct numbered in "aliases" node. + +Example: + +aliases { + spi0 = &spi0; +}; + +spi0: spi@f0200000 { + compatible = "nuvoton,npcm750-pspi"; + reg = <0xf0200000 0x1000>; + pinctrl-names = "default"; + pinctrl-0 = <&pspi1_pins>; + #address-cells = <1>; + #size-cells = <0>; + interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk NPCM7XX_CLK_APB5>; + clock-names = "clk_apb5"; + cs-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>; +}; |