[PATCH 13/15] arm: dts: medaitek: add flash interface driving settings for mt7988

[Weijie Gao]

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 at mediatek.com>
---
 arch/arm/dts/mt7988-rfb.dts | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm/dts/mt7988-rfb.dts b/arch/arm/dts/mt7988-rfb.dts
index 817fe400db8..2579d7099fb 100644
--- a/arch/arm/dts/mt7988-rfb.dts
+++ b/arch/arm/dts/mt7988-rfb.dts
@@ -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 */
 		};
 	};
 };
-- 
2.34.1