[PATCH 1/2] ARM: dts: ux500: Add the Imagis ISA to Janice DTS

Linus Walleij linusw at kernel.org
Mon Aug 24 15:51:03 PDT 2026


This adds the Imagis ISA1200 haptic feedback chip to the
Janice device tree.

Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
 arch/arm/boot/dts/st/ste-ux500-samsung-janice.dts | 56 ++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/st/ste-ux500-samsung-janice.dts b/arch/arm/boot/dts/st/ste-ux500-samsung-janice.dts
index 18fb7263058e..1f47d5910c9a 100644
--- a/arch/arm/boot/dts/st/ste-ux500-samsung-janice.dts
+++ b/arch/arm/boot/dts/st/ste-ux500-samsung-janice.dts
@@ -360,7 +360,38 @@ i2c-gpio-2 {
 		pinctrl-0 = <&i2c_gpio_2_default>;
 		#address-cells = <1>;
 		#size-cells = <0>;
-		/* TODO: add the Immersion ISA1200 I2C device here */
+
+		/* Haptic feedback unit Imagis ISA1200 */
+		haptic-engine at 49 {
+			compatible = "imagis,isa1200";
+			reg = <0x49>;
+
+			/*
+			 * GPIO194 pin HEN (motor hardware enable)
+			 * GPIO195 pin LEN (motor LDO enable)
+			 */
+			control-gpios = <&gpio6 2 GPIO_ACTIVE_HIGH>, <&gpio6 3 GPIO_ACTIVE_HIGH>;
+
+			/* clkout1 from ACLK divided by 8 */
+			clocks = <&clkout_clk DB8500_CLKOUT_1 DB8500_CLKOUT_SRC_ACLK 8>;
+
+			imagis,clk-div = <256>;
+			imagis,pll-div = <2>;
+
+			imagis,mode = <0>; /* LRA_MODE */
+
+			imagis,period-ns = <13400>;
+			imagis,duty-cycle-ns = <100>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&isa1200_janice_default>;
+
+			ldo {
+				regulator-name = "vdd_vib";
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3000000>;
+			};
+		};
 	};
 
 	/* Bit-banged I2C on GPIO151 and GPIO152 also called "NFC_I2C" */
@@ -996,4 +1027,27 @@ janice_cfg3 {
 			};
 		};
 	};
+	isa1200 {
+		isa1200_janice_default: isa1200_janice {
+			/* Bring out clkout1 on pin GPIO227 pin AH7 */
+			janice_mux {
+				function = "clkout";
+				groups = "clkout1_a_1";
+			};
+			janice_cfg1 {
+				pins = "GPIO227_AH7";
+				ste,config = <&out_lo>;
+			};
+			/* HEN GPIO */
+			janice_cfg2 {
+				pins = "GPIO194_AF27";
+				ste,config = <&gpio_out_lo>;
+			};
+			/* LEN GPIO */
+			janice_cfg3 {
+				pins = "GPIO195_AG28";
+				ste,config = <&gpio_out_lo>;
+			};
+		};
+	};
 };

-- 
2.55.0




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