IPQ40xx: Add SPI support

Since we have SPI driver for IPQ40xx QUP SPI controller, lets add the necessary nodes, pinctrl and clocks.
Signed-off-by: NRobert Marko <robert.marko@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>

arch/arm/dts/qcom-ipq4019.dtsi

@@ -22,6 +22,7 @@
 
 	aliases {
 		serial0 = &blsp1_uart1;
+		spi0 = &blsp1_spi1;
 	};
 
 	reserved-memory {
@@ -89,6 +90,17 @@
 			gpio-count = <100>;
 			gpio-bank-name="soc";
 			#gpio-cells = <2>;
+			u-boot,dm-pre-reloc;
+		};
+
+		blsp1_spi1: spi@78b5000 {
+			compatible = "qcom,spi-qup-v2.2.1";
+			reg = <0x78b5000 0x600>;
+			clocks = <&gcc GCC_BLSP1_QUP1_SPI_APPS_CLK>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+			u-boot,dm-pre-reloc;
 		};
 
 		usb3_ss_phy: ssphy@9a000 {

arch/arm/mach-ipq40xx/clock-ipq4019.c

@@ -2,7 +2,7 @@
 /*
  * Clock drivers for Qualcomm IPQ40xx
  *
- * Copyright (c) 2019 Sartura Ltd.
+ * Copyright (c) 2020 Sartura Ltd.
  *
  * Author: Robert Marko <robert.marko@sartura.hr>
  *
@@ -24,7 +24,7 @@ ulong msm_set_rate(struct clk *clk, ulong rate)
 	switch (clk->id) {
 	case GCC_BLSP1_UART1_APPS_CLK: /*UART1*/
 		/* This clock is already initialized by SBL1 */
-		return 0; 
+		return 0;
 		break;
 	default:
 		return 0;
@@ -47,8 +47,21 @@ static ulong msm_clk_set_rate(struct clk *clk, ulong rate)
 	return msm_set_rate(clk, rate);
 }
 
+static int msm_enable(struct clk *clk)
+{
+	switch (clk->id) {
+	case GCC_BLSP1_QUP1_SPI_APPS_CLK: /*SPI1*/
+		/* This clock is already initialized by SBL1 */
+		return 0;
+		break;
+	default:
+		return 0;
+	}
+}
+
 static struct clk_ops msm_clk_ops = {
 	.set_rate = msm_clk_set_rate,
+	.enable = msm_enable,
 };
 
 static const struct udevice_id msm_clk_ids[] = {

arch/arm/mach-ipq40xx/pinctrl-ipq4019.c

@@ -18,6 +18,9 @@ static const struct pinctrl_function msm_pinctrl_functions[] = {
 	{"blsp_uart0_0", 1}, /* Only for GPIO:16,17 */
 	{"blsp_uart0_1", 2}, /* Only for GPIO:60,61 */
 	{"blsp_uart1", 1},
+	{"blsp_spi0_0", 1}, /* Only for GPIO:12,13,14,15 */
+	{"blsp_spi0_1", 2}, /* Only for GPIO:54,55,56,57 */
+	{"blsp_spi1", 2},
 };
 
 static const char *ipq4019_get_function_name(struct udevice *dev,