diff options
| author | Cyrille Pitchen <cyrille.pitchen@microchip.com> | 2020-04-03 09:12:26 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-04-13 14:00:09 +0300 |
| commit | 51cca920ce84356d53068ac83a53ba8c45879a0e (patch) | |
| tree | 6f00d5a2e2376d1c6fd15657e56267187497fd8f /arch/arm/boot/dts/at91-sama5d2_xplained.dts | |
| parent | 0fd3a8f58f78b498784b72c1971c225c4e69ddac (diff) | |
| download | linux-51cca920ce84356d53068ac83a53ba8c45879a0e.tar.xz | |
ARM: dts: at91: sama5d2_xplained: Add QSPI0 + SPI NOR memory nodes
This patch enables the QSPI0 controller, configures its pin muxing and
declares a jedec,spi-nor memory.
sama5d2 Xplained RevB and RevC use the Macronix MX25L25673G flash
memory which advertises a maximum frequency of 80MHz for Quad IO
Fast Read. Set the spi-max-frequency to 80MHz knowing that actually
the QSPI drver will set the SPI bus clock to 166MHz / 3 = 55.3MHz.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@microchip.com>
Tested-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200403061222.1277147-3-tudor.ambarus@microchip.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'arch/arm/boot/dts/at91-sama5d2_xplained.dts')
| -rw-r--r-- | arch/arm/boot/dts/at91-sama5d2_xplained.dts | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts index 055ee53e4773..e0c6cff1a312 100644 --- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts +++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts @@ -72,6 +72,58 @@ }; apb { + qspi0: spi@f0020000 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_qspi0_default>; + status = "disabled"; /* conflict with sdmmc1 */ + + flash@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <80000000>; + spi-tx-bus-width = <4>; + spi-rx-bus-width = <4>; + m25p,fast-read; + + at91bootstrap@00000000 { + label = "at91bootstrap"; + reg = <0x00000000 0x00040000>; + }; + + bootloader@00040000 { + label = "bootloader"; + reg = <0x00040000 0x000c0000>; + }; + + bootloaderenvred@00100000 { + label = "bootloader env redundant"; + reg = <0x00100000 0x00040000>; + }; + + bootloaderenv@00140000 { + label = "bootloader env"; + reg = <0x00140000 0x00040000>; + }; + + dtb@00180000 { + label = "device tree"; + reg = <0x00180000 0x00080000>; + }; + + kernel@00200000 { + label = "kernel"; + reg = <0x00200000 0x00600000>; + }; + + misc@00800000 { + label = "misc"; + reg = <0x00800000 0x00000000>; + }; + }; + }; + spi0: spi@f8000000 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_spi0_default>; @@ -535,6 +587,22 @@ bias-disable; }; + pinctrl_qspi0_default: qspi0_default { + sck_cs { + pinmux = <PIN_PA22__QSPI0_SCK>, + <PIN_PA23__QSPI0_CS>; + bias-disable; + }; + + data { + pinmux = <PIN_PA24__QSPI0_IO0>, + <PIN_PA25__QSPI0_IO1>, + <PIN_PA26__QSPI0_IO2>, + <PIN_PA27__QSPI0_IO3>; + bias-pull-up; + }; + }; + pinctrl_sdmmc0_default: sdmmc0_default { cmd_data { pinmux = <PIN_PA1__SDMMC0_CMD>, |