diff options
| author | bui duc phuc <phucduc.bui@gmail.com> | 2026-02-24 10:45:32 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2026-03-13 12:57:50 +0300 |
| commit | 057c0944e09ff3392d2add958c3d2bd5b6586f1d (patch) | |
| tree | fa1513bce168ccf79be60e9d32f2a7d91b65fa13 | |
| parent | b2eaf45e12fafffbdfc20dbe7cb160a4d2c8f9be (diff) | |
| download | linux-057c0944e09ff3392d2add958c3d2bd5b6586f1d.tar.xz | |
ARM: dts: renesas: armadillo800eva: Enable SDHI1
The Armadillo-800EVA board provides an SD card slot and an AWL13 SDIO
interface connected to the SDHI1 controller. Routing between these two
interfaces is controlled by a mechanical DIP switch and a set of
multiplexers.
To support this, add:
- A fixed 3.3V regulator for SDHI1 power, controlled by PORT16 (G2),
- SDHI1 pinmux groups for data, control, and card detection,
- A gpio-hog for PORT6 (J5) to control the SDHI1/AWLAN multiplexer.
PORT176 (N21) is already configured as output-high in this DTS (via
lcd0-mux-hog), routing the SDSLOT2_ENABLE signal to PORT6. Since the
hardware includes an external 10k pull-up resistor (R94) on this line,
PORT6 is configured as an input to allow the physical DIP switch to
determine the routing without SoC interference.
Both configurations have been verified:
- SD card (CON8): detected as mmcblk1, high-speed SDHC,
- SDIO (CON14): detected as mmc1, high-speed SDIO.
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260224074532.60046-1-phucduc.bui@gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
| -rw-r--r-- | arch/arm/boot/dts/renesas/r8a7740-armadillo800eva.dts | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/renesas/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/renesas/r8a7740-armadillo800eva.dts index 04d24b6d8056..e7aae1e32b2e 100644 --- a/arch/arm/boot/dts/renesas/r8a7740-armadillo800eva.dts +++ b/arch/arm/boot/dts/renesas/r8a7740-armadillo800eva.dts @@ -65,6 +65,17 @@ enable-active-high; }; + vcc_sdhi1: regulator-vcc-sdhi1 { + compatible = "regulator-fixed"; + + regulator-name = "SDHI1 Vcc"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + + gpio = <&pfc 16 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + reg_5p0v: regulator-5p0v { compatible = "regulator-fixed"; regulator-name = "fixed-5.0V"; @@ -285,6 +296,11 @@ function = "sdhi0"; }; + sdhi1_pins: sd1 { + groups = "sdhi1_data4", "sdhi1_ctrl", "sdhi1_cd", "sdhi1_wp"; + function = "sdhi1"; + }; + fsia_pins: sounda { groups = "fsia_sclk_in", "fsia_mclk_out", "fsia_data_in_1", "fsia_data_out_0"; @@ -302,6 +318,12 @@ gpios = <176 0>; output-high; }; + + sdhi1-select-hog { + gpio-hog; + gpios = <6 0>; + input; + }; }; &tpu { @@ -336,6 +358,15 @@ status = "okay"; }; +&sdhi1 { + pinctrl-0 = <&sdhi1_pins>; + pinctrl-names = "default"; + + vmmc-supply = <&vcc_sdhi1>; + bus-width = <4>; + status = "okay"; +}; + &sh_fsi2 { pinctrl-0 = <&fsia_pins>; pinctrl-names = "default"; |