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dts: add SDIO support to apollo4p_evb

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Update dts for using SDIO on apollo4p_evb.

Signed-off-by: Darren Lu <dlu@ambiq.com>
This commit is contained in:
Darren Lu 2025-04-09 21:05:31 +08:00 • committed by Benjamin Cabé
commit 5fd343b316
3 changed files with 46 additions and 0 deletions
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21
boards/ambiq/apollo4p_evb/apollo4p_evb-pinctrl.dtsi
View file

@ -171,4 +171,25 @@
ambiq,iom-nce-module = <36>;
};
};
sdio0_default: sdio0_default {
group0 {
pinmux = <SDIF_DAT1_P85>,
<SDIF_DAT3_P87>,
<SDIF_DAT4_P79>,
<SDIF_DAT5_P80>,
<SDIF_DAT6_P81>,
<SDIF_DAT7_P82>;
drive-strength = "1.0";
};
group1 {
pinmux =
<SDIF_DAT0_P84>,
<SDIF_DAT2_P86>,
<SDIF_CMD_P83>,
<SDIF_CLKOUT_P88>;
drive-strength = "1.0";
bias-pull-up;
ambiq,pull-up-ohms = <12000>;
};
};
};

14
boards/ambiq/apollo4p_evb/apollo4p_evb.dts
View file

@ -26,6 +26,7 @@
sw0 = &button0;
sw1 = &button1;
rtc = &rtc0;
sdhc0 = &sdio0;
};
leds {
@ -154,6 +155,19 @@
clk-source = <3>;
};
&sdio0 {
pinctrl-0 = <&sdio0_default>;
pinctrl-names = "default";
txdelay = <0>;
rxdelay = <0>;
status = "okay";
mmc {
compatible = "zephyr,mmc-disk";
disk-name = "SD2";
status = "okay";
};
};
zephyr_udc0: &usb {
vddusb33-gpios = <&gpio96_127 7 (GPIO_PULL_UP)>;
vddusb0p9-gpios = <&gpio96_127 5 (GPIO_PULL_UP)>;

11
dts/arm/ambiq/ambiq_apollo4p.dtsi
View file

@ -368,6 +368,17 @@
status = "disabled";
};
sdio0: sdio@40070000 {
compatible = "ambiq,sdio";
reg = <0x40070000 0x100>;
interrupts = <26 0>;
max-bus-freq = <96000000>;
min-bus-freq = <375000>;
power-delay-ms = <50>;
status = "disabled";
zephyr,pm-device-runtime-auto;
};
usb: usb@400b0000 {
compatible = "ambiq,usb";
reg = <0x400B0000 0x4100>;