| Message ID | 1526589872-13459-1-git-send-email-stefan.wahren@i2se.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Stefan Wahren <stefan.wahren@i2se.com> writes: > The Raspberry Pi Compute Module (CM1) is a SoM which contains a > BCM2835 processor, 512 MB RAM and a 4 GB eMMC. There is also a carrier > board which is called Compute Module IO Board. > > Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> > --- > arch/arm/boot/dts/Makefile | 1 + > arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts | 92 +++++++++++++++++++++++++++++++ > arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi | 34 ++++++++++++ > 3 files changed, 127 insertions(+) > create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts > create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi > > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile > index ec2024e..a9883e8 100644 > --- a/arch/arm/boot/dts/Makefile > +++ b/arch/arm/boot/dts/Makefile > @@ -73,6 +73,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ > bcm2835-rpi-b-rev2.dtb \ > bcm2835-rpi-b-plus.dtb \ > bcm2835-rpi-a-plus.dtb \ > + bcm2835-rpi-cm1-io1.dtb \ > bcm2836-rpi-2-b.dtb \ > bcm2837-rpi-3-b.dtb \ > bcm2837-rpi-3-b-plus.dtb \ > diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts > new file mode 100644 > index 0000000..4d9aa22 > --- /dev/null > +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts > @@ -0,0 +1,92 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/dts-v1/; > +#include "bcm2835-rpi-cm1.dtsi" > +#include "bcm283x-rpi-usb-host.dtsi" > + > +/ { > + compatible = "raspberrypi,compute-module", "brcm,bcm2835"; > + model = "Raspberry Pi Compute Module IO board rev1"; > +}; > + > +&dsi1 { > + status = "okay"; > +}; > + > +&gpio { > + /* > + * This is based on the official GPU firmware DT blob. > + * > + * Legend: > + * "NC" = not connected (no rail from the SoC) > + * "FOO" = GPIO line named "FOO" on the schematic > + * "FOO_N" = GPIO line named "FOO" on schematic, active low > + */ > + gpio-line-names = "GPIO0", > + "GPIO1", > + "GPIO2", > + "GPIO3", > + "GPIO4", > + "GPIO5", > + "GPIO6", > + "GPIO7", > + "GPIO8", > + "GPIO9", > + "GPIO10", > + "GPIO11", > + "GPIO12", > + "GPIO13", > + "GPIO14", > + "GPIO15", > + "GPIO16", > + "GPIO17", > + "GPIO18", > + "GPIO19", > + "GPIO20", > + "GPIO21", > + "GPIO22", > + "GPIO23", > + "GPIO24", > + "GPIO25", > + "GPIO26", > + "GPIO27", > + "GPIO28", > + "GPIO29", > + "GPIO30", > + "GPIO31", > + "GPIO32", > + "GPIO33", > + "GPIO34", > + "GPIO35", > + "GPIO36", > + "GPIO37", > + "GPIO38", > + "GPIO39", > + "GPIO40", > + "GPIO41", > + "GPIO42", > + "GPIO43", > + "GPIO44", > + "GPIO45", > + "HDMI_HPD_N", > + /* Also used as ACT LED */ > + "EMMC_EN_N", > + /* Used by eMMC */ > + "SD_CLK_R", > + "SD_CMD_R", > + "SD_DATA0_R", > + "SD_DATA1_R", > + "SD_DATA2_R", > + "SD_DATA3_R"; > + > + pinctrl-0 = <&gpioout &alt0>; > +}; > + > +&hdmi { > + hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; > +}; I think this should be ACTIVE_LOW, since it's "HDMI_HPD_N_1V8", right? > + > +&uart0 { > + pinctrl-names = "default"; > + pinctrl-0 = <&uart0_gpio14>; > + status = "okay"; > +}; > diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi > new file mode 100644 > index 0000000..ef22c2d > --- /dev/null > +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi > @@ -0,0 +1,34 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/dts-v1/; > +#include "bcm2835.dtsi" > +#include "bcm2835-rpi.dtsi" > + > +/ { > + leds { > + act { > + gpios = <&gpio 47 GPIO_ACTIVE_LOW>; > + }; > + }; > + > + reg_3v3: fixed-regulator { > + compatible = "regulator-fixed"; > + regulator-name = "3V3"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + regulator-always-on; > + }; > + > + reg_1v8: fixed-regulator { > + compatible = "regulator-fixed"; > + regulator-name = "1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + }; > +}; > + > +&sdhost { > + non-removable; > + vmmc-supply = <®_3v3>; > + vqmmc-supply = <®_1v8>; > +}; Also, looking at some datasheets I have laying around, it says "eMMC I/O Voltage fixed at 1V8" -- is this regulator setup right, in that case? With answers for these two issues, it will be: Reviewed-by: Eric Anholt <eric@anholt.net>
> Eric Anholt <eric@anholt.net> hat am 21. Mai 2018 um 20:26 geschrieben: > > > Stefan Wahren <stefan.wahren@i2se.com> writes: > > > The Raspberry Pi Compute Module (CM1) is a SoM which contains a > > BCM2835 processor, 512 MB RAM and a 4 GB eMMC. There is also a carrier > > board which is called Compute Module IO Board. > > > > Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> > > --- > > arch/arm/boot/dts/Makefile | 1 + > > arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts | 92 +++++++++++++++++++++++++++++++ > > arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi | 34 ++++++++++++ > > 3 files changed, 127 insertions(+) > > create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts > > create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi > > > > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile > > index ec2024e..a9883e8 100644 > > --- a/arch/arm/boot/dts/Makefile > > +++ b/arch/arm/boot/dts/Makefile > > @@ -73,6 +73,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ > > bcm2835-rpi-b-rev2.dtb \ > > bcm2835-rpi-b-plus.dtb \ > > bcm2835-rpi-a-plus.dtb \ > > + bcm2835-rpi-cm1-io1.dtb \ > > bcm2836-rpi-2-b.dtb \ > > bcm2837-rpi-3-b.dtb \ > > bcm2837-rpi-3-b-plus.dtb \ > > diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts > > new file mode 100644 > > index 0000000..4d9aa22 > > --- /dev/null > > +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts > > @@ -0,0 +1,92 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/dts-v1/; > > +#include "bcm2835-rpi-cm1.dtsi" > > +#include "bcm283x-rpi-usb-host.dtsi" > > + > > +/ { > > + compatible = "raspberrypi,compute-module", "brcm,bcm2835"; > > + model = "Raspberry Pi Compute Module IO board rev1"; > > +}; > > + > > +&dsi1 { > > + status = "okay"; > > +}; > > + > > +&gpio { > > + /* > > + * This is based on the official GPU firmware DT blob. > > + * > > + * Legend: > > + * "NC" = not connected (no rail from the SoC) > > + * "FOO" = GPIO line named "FOO" on the schematic > > + * "FOO_N" = GPIO line named "FOO" on schematic, active low > > + */ > > + gpio-line-names = "GPIO0", > > + "GPIO1", > > + "GPIO2", > > + "GPIO3", > > + "GPIO4", > > + "GPIO5", > > + "GPIO6", > > + "GPIO7", > > + "GPIO8", > > + "GPIO9", > > + "GPIO10", > > + "GPIO11", > > + "GPIO12", > > + "GPIO13", > > + "GPIO14", > > + "GPIO15", > > + "GPIO16", > > + "GPIO17", > > + "GPIO18", > > + "GPIO19", > > + "GPIO20", > > + "GPIO21", > > + "GPIO22", > > + "GPIO23", > > + "GPIO24", > > + "GPIO25", > > + "GPIO26", > > + "GPIO27", > > + "GPIO28", > > + "GPIO29", > > + "GPIO30", > > + "GPIO31", > > + "GPIO32", > > + "GPIO33", > > + "GPIO34", > > + "GPIO35", > > + "GPIO36", > > + "GPIO37", > > + "GPIO38", > > + "GPIO39", > > + "GPIO40", > > + "GPIO41", > > + "GPIO42", > > + "GPIO43", > > + "GPIO44", > > + "GPIO45", > > + "HDMI_HPD_N", > > + /* Also used as ACT LED */ > > + "EMMC_EN_N", > > + /* Used by eMMC */ > > + "SD_CLK_R", > > + "SD_CMD_R", > > + "SD_DATA0_R", > > + "SD_DATA1_R", > > + "SD_DATA2_R", > > + "SD_DATA3_R"; > > + > > + pinctrl-0 = <&gpioout &alt0>; > > +}; > > + > > +&hdmi { > > + hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; > > +}; > > I think this should be ACTIVE_LOW, since it's "HDMI_HPD_N_1V8", right? I just copy & paste from the rpi-4.14/bcm2708-rpi-cm.dts. I thought the HDMI interface on my IO board is broken, but maybe this is a downstream issue. > > > + > > +&uart0 { > > + pinctrl-names = "default"; > > + pinctrl-0 = <&uart0_gpio14>; > > + status = "okay"; > > +}; > > diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi > > new file mode 100644 > > index 0000000..ef22c2d > > --- /dev/null > > +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi > > @@ -0,0 +1,34 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/dts-v1/; > > +#include "bcm2835.dtsi" > > +#include "bcm2835-rpi.dtsi" > > + > > +/ { > > + leds { > > + act { > > + gpios = <&gpio 47 GPIO_ACTIVE_LOW>; > > + }; > > + }; > > + > > + reg_3v3: fixed-regulator { > > + compatible = "regulator-fixed"; > > + regulator-name = "3V3"; > > + regulator-min-microvolt = <3300000>; > > + regulator-max-microvolt = <3300000>; > > + regulator-always-on; > > + }; > > + > > + reg_1v8: fixed-regulator { > > + compatible = "regulator-fixed"; > > + regulator-name = "1V8"; > > + regulator-min-microvolt = <1800000>; > > + regulator-max-microvolt = <1800000>; > > + regulator-always-on; > > + }; > > +}; > > + > > +&sdhost { > > + non-removable; > > + vmmc-supply = <®_3v3>; > > + vqmmc-supply = <®_1v8>; > > +}; > > Also, looking at some datasheets I have laying around, it says "eMMC I/O > Voltage fixed at 1V8" -- is this regulator setup right, in that case? Usually an eMMC has 2 different voltage sources: vqmmc-supply -> supply node for IO line power (usually switchable, but fixed on Compute Module) vmmc-supply -> supply node for card's power (usually fixed) Do you have a specific concern (voltage, naming)? Does this conversation help [1]? Please also look at the CM schematics page 1 and 3. [1] - https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=213772 > > With answers for these two issues, it will be: > > Reviewed-by: Eric Anholt <eric@anholt.net> > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Stefan Wahren <stefan.wahren@i2se.com> writes: >> Eric Anholt <eric@anholt.net> hat am 21. Mai 2018 um 20:26 geschrieben: >> >> >> Stefan Wahren <stefan.wahren@i2se.com> writes: >> >> > The Raspberry Pi Compute Module (CM1) is a SoM which contains a >> > BCM2835 processor, 512 MB RAM and a 4 GB eMMC. There is also a carrier >> > board which is called Compute Module IO Board. >> > >> > Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> >> > --- >> > arch/arm/boot/dts/Makefile | 1 + >> > arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts | 92 +++++++++++++++++++++++++++++++ >> > arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi | 34 ++++++++++++ >> > 3 files changed, 127 insertions(+) >> > create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts >> > create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi >> > >> > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile >> > index ec2024e..a9883e8 100644 >> > --- a/arch/arm/boot/dts/Makefile >> > +++ b/arch/arm/boot/dts/Makefile >> > @@ -73,6 +73,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ >> > bcm2835-rpi-b-rev2.dtb \ >> > bcm2835-rpi-b-plus.dtb \ >> > bcm2835-rpi-a-plus.dtb \ >> > + bcm2835-rpi-cm1-io1.dtb \ >> > bcm2836-rpi-2-b.dtb \ >> > bcm2837-rpi-3-b.dtb \ >> > bcm2837-rpi-3-b-plus.dtb \ >> > diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts >> > new file mode 100644 >> > index 0000000..4d9aa22 >> > --- /dev/null >> > +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts >> > @@ -0,0 +1,92 @@ >> > +// SPDX-License-Identifier: GPL-2.0 >> > +/dts-v1/; >> > +#include "bcm2835-rpi-cm1.dtsi" >> > +#include "bcm283x-rpi-usb-host.dtsi" >> > + >> > +/ { >> > + compatible = "raspberrypi,compute-module", "brcm,bcm2835"; >> > + model = "Raspberry Pi Compute Module IO board rev1"; >> > +}; >> > + >> > +&dsi1 { >> > + status = "okay"; >> > +}; >> > + >> > +&gpio { >> > + /* >> > + * This is based on the official GPU firmware DT blob. >> > + * >> > + * Legend: >> > + * "NC" = not connected (no rail from the SoC) >> > + * "FOO" = GPIO line named "FOO" on the schematic >> > + * "FOO_N" = GPIO line named "FOO" on schematic, active low >> > + */ >> > + gpio-line-names = "GPIO0", >> > + "GPIO1", >> > + "GPIO2", >> > + "GPIO3", >> > + "GPIO4", >> > + "GPIO5", >> > + "GPIO6", >> > + "GPIO7", >> > + "GPIO8", >> > + "GPIO9", >> > + "GPIO10", >> > + "GPIO11", >> > + "GPIO12", >> > + "GPIO13", >> > + "GPIO14", >> > + "GPIO15", >> > + "GPIO16", >> > + "GPIO17", >> > + "GPIO18", >> > + "GPIO19", >> > + "GPIO20", >> > + "GPIO21", >> > + "GPIO22", >> > + "GPIO23", >> > + "GPIO24", >> > + "GPIO25", >> > + "GPIO26", >> > + "GPIO27", >> > + "GPIO28", >> > + "GPIO29", >> > + "GPIO30", >> > + "GPIO31", >> > + "GPIO32", >> > + "GPIO33", >> > + "GPIO34", >> > + "GPIO35", >> > + "GPIO36", >> > + "GPIO37", >> > + "GPIO38", >> > + "GPIO39", >> > + "GPIO40", >> > + "GPIO41", >> > + "GPIO42", >> > + "GPIO43", >> > + "GPIO44", >> > + "GPIO45", >> > + "HDMI_HPD_N", >> > + /* Also used as ACT LED */ >> > + "EMMC_EN_N", >> > + /* Used by eMMC */ >> > + "SD_CLK_R", >> > + "SD_CMD_R", >> > + "SD_DATA0_R", >> > + "SD_DATA1_R", >> > + "SD_DATA2_R", >> > + "SD_DATA3_R"; >> > + >> > + pinctrl-0 = <&gpioout &alt0>; >> > +}; >> > + >> > +&hdmi { >> > + hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; >> > +}; >> >> I think this should be ACTIVE_LOW, since it's "HDMI_HPD_N_1V8", right? > > I just copy & paste from the rpi-4.14/bcm2708-rpi-cm.dts. I thought > the HDMI interface on my IO board is broken, but maybe this is a > downstream issue. Downstream gets HDMI wrong pretty frequently, so it's not surprising. Watching xrandr -q with X11 running and plugging and unplugging HDMI can help figure out whether we got the polarity right. I think you can also do this with libdrm's modetest, if you don't have X11 up. >> > + >> > +&uart0 { >> > + pinctrl-names = "default"; >> > + pinctrl-0 = <&uart0_gpio14>; >> > + status = "okay"; >> > +}; >> > diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi >> > new file mode 100644 >> > index 0000000..ef22c2d >> > --- /dev/null >> > +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi >> > @@ -0,0 +1,34 @@ >> > +// SPDX-License-Identifier: GPL-2.0 >> > +/dts-v1/; >> > +#include "bcm2835.dtsi" >> > +#include "bcm2835-rpi.dtsi" >> > + >> > +/ { >> > + leds { >> > + act { >> > + gpios = <&gpio 47 GPIO_ACTIVE_LOW>; >> > + }; >> > + }; >> > + >> > + reg_3v3: fixed-regulator { >> > + compatible = "regulator-fixed"; >> > + regulator-name = "3V3"; >> > + regulator-min-microvolt = <3300000>; >> > + regulator-max-microvolt = <3300000>; >> > + regulator-always-on; >> > + }; >> > + >> > + reg_1v8: fixed-regulator { >> > + compatible = "regulator-fixed"; >> > + regulator-name = "1V8"; >> > + regulator-min-microvolt = <1800000>; >> > + regulator-max-microvolt = <1800000>; >> > + regulator-always-on; >> > + }; >> > +}; >> > + >> > +&sdhost { >> > + non-removable; >> > + vmmc-supply = <®_3v3>; >> > + vqmmc-supply = <®_1v8>; >> > +}; >> >> Also, looking at some datasheets I have laying around, it says "eMMC I/O >> Voltage fixed at 1V8" -- is this regulator setup right, in that case? > > Usually an eMMC has 2 different voltage sources: > vqmmc-supply -> supply node for IO line power (usually switchable, but fixed on Compute Module) > vmmc-supply -> supply node for card's power (usually fixed) > > Do you have a specific concern (voltage, naming)? It was just "I was reviewing, and this stood out." That explanation there seems sufficient to me. Thanks!
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index ec2024e..a9883e8 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -73,6 +73,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ bcm2835-rpi-b-rev2.dtb \ bcm2835-rpi-b-plus.dtb \ bcm2835-rpi-a-plus.dtb \ + bcm2835-rpi-cm1-io1.dtb \ bcm2836-rpi-2-b.dtb \ bcm2837-rpi-3-b.dtb \ bcm2837-rpi-3-b-plus.dtb \ diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts new file mode 100644 index 0000000..4d9aa22 --- /dev/null +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0 +/dts-v1/; +#include "bcm2835-rpi-cm1.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" + +/ { + compatible = "raspberrypi,compute-module", "brcm,bcm2835"; + model = "Raspberry Pi Compute Module IO board rev1"; +}; + +&dsi1 { + status = "okay"; +}; + +&gpio { + /* + * This is based on the official GPU firmware DT blob. + * + * Legend: + * "NC" = not connected (no rail from the SoC) + * "FOO" = GPIO line named "FOO" on the schematic + * "FOO_N" = GPIO line named "FOO" on schematic, active low + */ + gpio-line-names = "GPIO0", + "GPIO1", + "GPIO2", + "GPIO3", + "GPIO4", + "GPIO5", + "GPIO6", + "GPIO7", + "GPIO8", + "GPIO9", + "GPIO10", + "GPIO11", + "GPIO12", + "GPIO13", + "GPIO14", + "GPIO15", + "GPIO16", + "GPIO17", + "GPIO18", + "GPIO19", + "GPIO20", + "GPIO21", + "GPIO22", + "GPIO23", + "GPIO24", + "GPIO25", + "GPIO26", + "GPIO27", + "GPIO28", + "GPIO29", + "GPIO30", + "GPIO31", + "GPIO32", + "GPIO33", + "GPIO34", + "GPIO35", + "GPIO36", + "GPIO37", + "GPIO38", + "GPIO39", + "GPIO40", + "GPIO41", + "GPIO42", + "GPIO43", + "GPIO44", + "GPIO45", + "HDMI_HPD_N", + /* Also used as ACT LED */ + "EMMC_EN_N", + /* Used by eMMC */ + "SD_CLK_R", + "SD_CMD_R", + "SD_DATA0_R", + "SD_DATA1_R", + "SD_DATA2_R", + "SD_DATA3_R"; + + pinctrl-0 = <&gpioout &alt0>; +}; + +&hdmi { + hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; +}; + +&uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_gpio14>; + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi new file mode 100644 index 0000000..ef22c2d --- /dev/null +++ b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/dts-v1/; +#include "bcm2835.dtsi" +#include "bcm2835-rpi.dtsi" + +/ { + leds { + act { + gpios = <&gpio 47 GPIO_ACTIVE_LOW>; + }; + }; + + reg_3v3: fixed-regulator { + compatible = "regulator-fixed"; + regulator-name = "3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + }; + + reg_1v8: fixed-regulator { + compatible = "regulator-fixed"; + regulator-name = "1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + }; +}; + +&sdhost { + non-removable; + vmmc-supply = <®_3v3>; + vqmmc-supply = <®_1v8>; +};
The Raspberry Pi Compute Module (CM1) is a SoM which contains a BCM2835 processor, 512 MB RAM and a 4 GB eMMC. There is also a carrier board which is called Compute Module IO Board. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts | 92 +++++++++++++++++++++++++++++++ arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi | 34 ++++++++++++ 3 files changed, 127 insertions(+) create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi