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arm: dts: medaitek: add flash interface driving settings for mt7988

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Add driving settings for both SPI and SD/eMMC interfaces to support ensure
flash devices is accessible for ram-booting.

Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This commit is contained in:
Weijie Gao
2025-01-17 17:18:41 +08:00
committed by Tom Rini
parent 64cf3dd0ef
commit 1090c6df37
1 changed files with 32 additions and 0 deletions
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32
arch/arm/dts/mt7988-rfb.dts
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@@ -101,6 +101,19 @@
function = "spi";
groups = "spi0", "spi0_wp_hold";
};
conf-pu {
pins = "SPI0_CSB", "SPI0_HOLD", "SPI0_WP";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
};
conf-pd {
pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
};
};
spi2_pins: spi2-pins {
@@ -108,6 +121,18 @@
function = "spi";
groups = "spi2", "spi2_wp_hold";
};
conf-pu {
pins = "SPI2_CSB", "SPI2_HOLD", "SPI2_WP";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
};
conf-pd {
pins = "SPI2_CLK", "SPI2_MOSI", "SPI2_MISO";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
};
};
mmc0_pins_default: mmc0default {
@@ -121,18 +146,25 @@
"EMMC_DATA_3", "EMMC_DATA_4", "EMMC_DATA_5",
"EMMC_DATA_6", "EMMC_DATA_7", "EMMC_CMD";
input-enable;
drive-strength = <MTK_DRIVE_4mA>;
mediatek,pull-up-adv = <1>; /* pull-up 10K */
};
conf-clk {
pins = "EMMC_CK";
drive-strength = <MTK_DRIVE_6mA>;
mediatek,pull-down-adv = <2>; /* pull-down 50K */
};
conf-dsl {
pins = "EMMC_DSL";
mediatek,pull-down-adv = <2>; /* pull-down 50K */
};
conf-rst {
pins = "EMMC_RSTB";
drive-strength = <MTK_DRIVE_4mA>;
mediatek,pull-up-adv = <1>; /* pull-up 10K */
};
};
};