RHEL-kernel-ark/Documentation/devicetree/bindings/spi
Iker Pedrosa 7b4035ebf2
spi: dt-bindings: Document CS active-high
The current documentation does not clearly explain how to invert the SPI
CS signal to make it active-high. This makes it very difficult to
understand.

This patch adds a simple explanation on how to set the CS line in
active-high and adds an example to make it easier for users who need
that setup for their SPI peripherals.

Link: https://forums.raspberrypi.com/viewtopic.php?t=378222
Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20241216095739.27320-1-ikerpedrosam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-12-17 15:37:14 +00:00
..
adi,axi-spi-engine.yaml
airoha,en7581-snand.yaml spi: dt-bindings: airoha: Add YAML schema for SNFI controller 2024-04-30 23:40:29 +09:00
allwinner,sun4i-a10-spi.yaml
allwinner,sun6i-a31-spi.yaml
amlogic,a1-spifc.yaml dt-bindings: spi: amlogic,a1-spifc: add missing power-domains 2024-06-05 18:05:20 +01:00
amlogic,meson-gx-spicc.yaml
amlogic,meson6-spifc.yaml
apple,spi.yaml spi: dt-bindings: apple,spi: Add binding for Apple SPI controllers 2024-11-06 14:15:39 +00:00
arm,pl022-peripheral-props.yaml
aspeed,ast2600-fmc.yaml
atmel,at91rm9200-spi.yaml spi: dt-bindings: at91: Add sama7d65 compatible string 2024-07-12 00:18:43 +01:00
atmel,quadspi.yaml
brcm,bcm63xx-hsspi.yaml
brcm,bcm63xx-spi.yaml
brcm,bcm2835-aux-spi.yaml spi: dt-bindings: brcm,bcm2835-aux-spi: Convert to dtschema 2024-10-17 16:07:59 +01:00
brcm,bcm2835-spi.yaml spi: dt-bindings: brcm,bcm2835-spi: convert to dtschema 2024-05-27 01:33:41 +01:00
brcm,spi-bcm-qspi.yaml
cdns,qspi-nor-peripheral-props.yaml
cdns,qspi-nor.yaml spi: dt-bindings: cdns,qspi-nor: Add compatible string to support OSPI controller on Versal Gen2 platform 2024-12-02 00:32:25 +00:00
cdns,xspi.yaml spi: dt-bindings: cadence: Add Marvell overlay bindings documentation for Cadence XSPI 2024-07-29 01:19:24 +01:00
cirrus,ep9301-spi.yaml dt-bindings: spi: Add Cirrus EP93xx 2024-09-12 14:33:11 +00:00
fsl,dspi-peripheral-props.yaml spi: dt-bindings: fsl-dspi: Convert to yaml format 2024-07-01 13:12:43 +01:00
fsl,dspi.yaml spi: dt-bindings: fsl-dspi: add compatible string 'fsl,lx2160a-dspi' 2024-07-08 12:50:30 +01:00
fsl,spi-fsl-qspi.yaml
fsl-imx-cspi.yaml
fsl-spi.txt
hpe,gxp-spifi.yaml
ibm,spi-fsi.yaml spi: dt-bindings: Document the IBM FSI-attached SPI controller 2024-05-27 01:33:43 +01:00
icpdas-lp8841-spi-rtc.txt
ingenic,spi.yaml
jcore,spi.txt
loongson,ls2k-spi.yaml
marvell,armada-3700-spi.yaml spi: dt-bindings: armada-3700: convert to dtschema 2024-04-21 09:57:22 +09:00
marvell,mmp2-ssp.yaml spi: dt-bindings: marvell,mmp2-ssp: Merge PXA SSP into schema 2024-05-27 01:33:37 +01:00
mediatek,spi-mt65xx.yaml spi: dt-bindings: mediatek,spi-mt65xx: add compatible for MT7981 2024-07-29 01:23:22 +01:00
mediatek,spi-mtk-nor.yaml
mediatek,spi-mtk-snfi.yaml
mediatek,spi-slave-mt27xx.yaml
microchip,mpfs-spi.yaml dt-bindings: spi: add PIC64GX SPI/QSPI compatibility to MPFS SPI/QSPI bindings 2024-08-14 18:26:52 +01:00
microchip,spi-pic32.txt
mikrotik,rb4xx-spi.yaml
mxicy,mx25f0a-spi.yaml
mxs-spi.yaml
nuvoton,npcm-fiu.txt
nuvoton,npcm-pspi.txt
nuvoton,wpcm450-fiu.yaml
nvidia,tegra20-sflash.yaml
nvidia,tegra20-slink.yaml
nvidia,tegra114-spi.yaml
nvidia,tegra210-quad-peripheral-props.yaml
nvidia,tegra210-quad.yaml
nxp,sc18is.yaml spi: dt-bindings: convert spi-sc18is602.txt to yaml format 2024-08-13 18:08:56 +01:00
omap-spi.yaml
qca,ar934x-spi.yaml
qcom,spi-geni-qcom.yaml
qcom,spi-qcom-qspi.yaml
qcom,spi-qup.yaml
ralink,mt7621-spi.yaml
realtek,rtl-spi.yaml
realtek,rtl9301-snand.yaml dt-bindings: spi: Add realtek,rtl9301-snand 2024-10-21 12:49:37 +01:00
renesas,hspi.yaml
renesas,rspi.yaml
renesas,rzv2m-csi.yaml
renesas,sh-msiof.yaml spi: renesas,sh-msiof: Add r8a779h0 support 2024-04-17 09:52:04 +09:00
rockchip-sfc.yaml
samsung,spi-peripheral-props.yaml
samsung,spi.yaml spi: dt-bindings: samsung: Add a compatible for samsung,exynos8895-spi 2024-10-21 12:49:48 +01:00
snps,dw-apb-ssi.yaml spi: dt-bindings: snps,dw-apb-ssi.yaml: update compatible property 2024-07-01 18:08:50 +01:00
socionext,f-ospi.yaml
socionext,synquacer-spi.yaml
socionext,uniphier-spi.yaml
spi-ath79.txt
spi-bus.txt
spi-cadence.yaml spi: dt-bindings: spi-cadence: Add optional reset control 2024-05-27 01:32:58 +01:00
spi-clps711x.txt
spi-controller.yaml spi: dt-bindings: Document CS active-high 2024-12-17 15:37:14 +00:00
spi-davinci.txt
spi-fsl-lpspi.yaml dt-bindings: drop stale Anson Huang from maintainers 2024-07-09 07:40:17 -06:00
spi-gpio.yaml
spi-img-spfi.txt
spi-lantiq-ssc.txt
spi-mux.yaml
spi-nxp-fspi.yaml dt-bindings: spi: nxp-fspi: add imx8ulp support 2024-09-05 16:07:19 +01:00
spi-octeon.txt
spi-orion.txt
spi-peripheral-props.yaml spi: dt-bindings: fsl-dspi: Convert to yaml format 2024-07-01 13:12:43 +01:00
spi-pl022.yaml
spi-rockchip.yaml spi: dt-bindings: Add rockchip,rk3576-spi compatible 2024-09-03 17:38:41 +01:00
spi-sifive.yaml
spi-sunplus-sp7021.yaml
spi-xilinx.yaml
spi-xtensa-xtfpga.txt
spi-zynqmp-qspi.yaml dt-bindings: spi: zynqmp-qspi: Include two 'reg' properties only for the Zynq UltraScale QSPI 2024-09-30 01:12:24 +02:00
spi_altera.txt
spi_oc_tiny.txt
sprd,sc9860-spi.yaml dt-bindings: spi: sprd,sc9860-spi: convert to YAML 2024-10-31 12:01:12 +00:00
sprd,spi-adi.yaml
sqi-pic32.txt
st,ssc-spi.yaml
st,stm32-qspi.yaml
st,stm32-spi.yaml dt-bindings: dma: New directory for STM32 DMA controllers bindings 2024-06-11 23:55:33 +05:30
ti,qspi.yaml spi: dt-bindings: ti,qspi: convert to dtschema 2024-05-03 11:09:31 +09:00
xlnx,zynq-qspi.yaml