Sciaps dpp

arch/arm/boot/dts/qcom/apq8016-dart.dtsi

@@ -137,8 +137,10 @@
 	vbus_otg-supply = <&vph_pwr_vreg>;
 };
 
+//For Ketek DPP3: must be "disabled"
 &blsp1_uart1 {
-	status = "ok";
+	//status = "ok";
+	status = "disabled";
 };
 
 &blsp1_uart2 {

arch/arm/boot/dts/qcom/apq8016-var-sd410.dtsi

@@ -85,12 +85,21 @@
 			reg = <0x59>;
 		};
 
-		/* DS1307 RTC module */
-		rtc@0x68 {
-			compatible = "dallas,ds1307";
+		///* DS1307 RTC module */
+		//rtc@0x68 {
+		//	compatible = "dallas,ds1307";
+		//	reg = <0x68>;
+		//};
+
+		ds1341: rtc@68 {
+			compatible = "dallas,ds1341";
+			disable-oscillator-stop-flag;
+			//enable-glitch-filter;
+			enable-sciaps-SQWnINTB-workaround;
 			reg = <0x68>;
 		};
 
+
 		nose_cam_leds@0x62 {
 			compatible = "nxp,pca9633";
 			#address-cells = <1>;

arch/arm/boot/dts/qcom/msm8916-cdp.dtsi

@@ -358,8 +358,10 @@
 	};
 };
 
+//For Ketek DPP3: must be "disabled"
 &blsp1_uart1 {
-	status = "ok";
+	//status = "ok";
+	status = "disabled";
 };
 
 &sdhc_1 {

arch/arm/boot/dts/qcom/msm8916-mtp.dtsi

@@ -247,8 +247,10 @@
 	};
 };
 
+//For Ketek DPP3: must be "disabled"
 &blsp1_uart1 {
-	status = "ok";
+	//status = "ok";
+	status = "disabled";
 };
 
 &sdhc_1 {

arch/arm/boot/dts/qcom/msm8916-pinctrl.dtsi

@@ -345,6 +345,58 @@
 			};
 		};
 
+		// spi1 spi_1 is BLSP1 QUP0 (also called BLSP1)
+		spi1_active {
+			/* MOSI, MISO, CLK */
+			qcom,pins = <&gp 0>, <&gp 1>, <&gp 3>;
+			qcom,num-grp-pins = <3>;
+			qcom,pin-func = <1>;
+			label = "spi1-active";
+			/* active state */
+			spi1_default: spi1_default {
+				drive-strength = <12>; /* 12 MA */
+				bias-disable = <0>; /* No PULL */
+			};
+		};
+
+		spi1_suspend {
+			/* MOSI, MISO, CLK */
+			qcom,pins = <&gp 0>, <&gp 1>, <&gp 3>;
+			qcom,num-grp-pins = <3>;
+			qcom,pin-func = <0>;
+			label = "spi1-suspend";
+			/* suspended state */
+			spi1_sleep: spi1_sleep {
+				drive-strength = <2>; /* 2 MA */
+				bias-pull-down; /* pull down */
+			};
+		};
+
+		spi1_cs0_active {
+			/* CS */
+			qcom,pins = <&gp 2>;
+			qcom,num-grp-pins = <1>;
+			qcom,pin-func = <1>;
+			label = "spi1-cs0-active";
+			spi1_cs0_active: cs0_active {
+				drive-strength = <2>;
+				bias-disable = <0>;
+			};
+		};
+
+
+		spi1_cs0_suspend {
+			/* CS */
+			qcom,pins = <&gp 2>;
+			qcom,num-grp-pins = <1>;
+			qcom,pin-func = <0>;
+			label = "spi1-cs0-suspend";
+			spi1_cs0_sleep: cs0_sleep {
+				drive-strength = <2>;
+				bias-disable = <0>;
+			};
+		};
+
 		spi2_active {
 			/* MOSI, MISO, CLK */
 			qcom,pins = <&gp 16>, <&gp 17>, <&gp 19>;

arch/arm/boot/dts/qcom/msm8916.dtsi

@@ -51,7 +51,8 @@
 		i2c6 = &i2c_6; /* I2C6 NFC qup6 device */
 		i2c3 = &i2c_3; /* I2C7 BLSP1 QUP3 (also BLSP3) device */
 		i2c4 = &i2c_4; /* I2C4 controller device */
-                uart4 = &blsp1_uart1;
+		// Disable for Ketek DPP3
+		//uart4 = &blsp1_uart1;
 	};
 
 	cpus {
@@ -447,8 +448,52 @@
 		pinctrl-names = "sleep", "default";
 		pinctrl-0 = <&hsuart_sleep>;
 		pinctrl-1 = <&hsuart_active>;
-		/*status = "disabled";*/
+		//For Ketek DPP3: must be "disabled"
+		//status = "ok";
+		status = "disabled";
+	};
+
+	spi_1: spi@78b5000 { /* BLSP1: BLSP1 QUP0 */
+		compatible = "qcom,spi-qup-v2";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg-names = "spi_physical", "spi_bam_physical";
+		reg = 	<0x78b5000 0x600>,
+			<0x7884000 0x23000>;
+		interrupt-names = "spi_irq", "spi_bam_irq";
+		interrupts = <0 95 0>, <0 238 0>;
+		spi-max-frequency = <50000000>;
+		qcom,gpio-mosi = <&msm_gpio 0 0>;
+		qcom,gpio-miso = <&msm_gpio 1 0>;
+		qcom,gpio-clk  = <&msm_gpio 3 0>;
+		qcom,gpio-cs0  = <&msm_gpio 2 0>;
+		cs-gpios = <&msm_gpio 2 0>;
+		pinctrl-names = "spi_default", "spi_sleep";
+		pinctrl-0 = <&spi1_default &spi1_cs0_active>;
+		pinctrl-1 = <&spi1_sleep &spi1_cs0_sleep>;
+
+		clocks = <&clock_gcc clk_gcc_blsp1_ahb_clk>,
+			<&clock_gcc clk_gcc_blsp1_qup1_spi_apps_clk>;
+		clock-names = "iface_clk", "core_clk";
+		qcom,infinite-mode = <0>;
+		qcom,use-bam;
+		qcom,use-pinctrl;
+		qcom,ver-reg-exists;
+		qcom,bam-consumer-pipe-index = <4>;
+		qcom,bam-producer-pipe-index = <5>;
+		qcom,master-id = <86>;
+		//For Ketek DPP3: must be "ok"
 		status = "ok";
+		//status = "disabled";
+
+		ketek_dpp3@0 {
+			compatible = "ketek,dpp3";
+			reg = <0>;
+			spi-max-frequency = <12000000>;
+			spi-cpha = <0>;
+			spi-cpol = <0>;
+		};
+
 	};
 
 	blsp1_uart2: serial@78b0000 {

arch/arm64/configs/ngx_defconfig

@@ -586,3 +586,4 @@ CONFIG_QMI_ENCDEC=y
 CONFIG_STRICT_MEMORY_RWX=y
 CONFIG_USB_NET_AX8817X = y
 CONFIG_FB_MSM_MDSS_SPLASH_SCIAPS_X=y
+CONFIG_SCIAPS_DRIVERS=y

drivers/Kconfig

@@ -188,4 +188,6 @@ source "drivers/soc/Kconfig"
 
 source "drivers/firmware/Kconfig"
 
+source "drivers/sciaps/Kconfig"
+
 endmenu

drivers/Makefile

@@ -168,3 +168,6 @@ obj-$(CONFIG_ESOC)		+= esoc/
 obj-$(CONFIG_BIF)		+= bif/
 obj-$(CONFIG_SENSORS)		+= sensors/
 obj-$(CONFIG_SENSORS_SSC)	+= sensors/
+
+# SciAps Drivers
+obj-$(CONFIG_SCIAPS_DRIVERS)	+= sciaps/