poplar: sync up device tree with kernel 4.20

It adds missing pinctrl headers, updates clock header and sync up Poplar
device tree with kernel 4.20 release.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/dts/poplar-pinctrl.dtsi b/arch/arm/dts/poplar-pinctrl.dtsi
new file mode 100644
index 0000000..7bb19e4
--- /dev/null
+++ b/arch/arm/dts/poplar-pinctrl.dtsi
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Pinctrl dts file for HiSilicon Poplar board
+ *
+ * Copyright (c) 2016-2018 HiSilicon Technologies Co., Ltd.
+ */
+
+#include <dt-bindings/pinctrl/hisi.h>
+
+/* value, enable bits, disable bits, mask */
+#define PINCTRL_PULLDOWN(value, enable, disable, mask) \
+	(value << 13) (enable << 13) (disable << 13) (mask << 13)
+#define PINCTRL_PULLUP(value, enable, disable, mask) \
+	(value << 12) (enable << 12) (disable << 12) (mask << 12)
+#define PINCTRL_SLEW_RATE(value, mask)	  (value << 8) (mask << 8)
+#define PINCTRL_DRV_STRENGTH(value, mask) (value << 4) (mask << 4)
+
+&pmx0 {
+	emmc_pins_1: emmc-pins-1 {
+		pinctrl-single,pins = <
+			0x000 MUX_M2
+			0x004 MUX_M2
+			0x008 MUX_M2
+			0x00c MUX_M2
+			0x010 MUX_M2
+			0x014 MUX_M2
+			0x018 MUX_M2
+			0x01c MUX_M2
+			0x024 MUX_M2
+		>;
+		pinctrl-single,bias-pulldown = <
+			PINCTRL_PULLDOWN(0, 1, 0, 1)
+		>;
+		pinctrl-single,bias-pullup = <
+			PINCTRL_PULLUP(0, 1, 0, 1)
+		>;
+		pinctrl-single,slew-rate = <
+			PINCTRL_SLEW_RATE(1, 1)
+		>;
+		pinctrl-single,drive-strength = <
+			PINCTRL_DRV_STRENGTH(0xb, 0xf)
+		>;
+	};
+
+	emmc_pins_2: emmc-pins-2 {
+		pinctrl-single,pins = <
+			0x028 MUX_M2
+		>;
+		pinctrl-single,bias-pulldown = <
+			PINCTRL_PULLDOWN(0, 1, 0, 1)
+		>;
+		pinctrl-single,bias-pullup = <
+			PINCTRL_PULLUP(0, 1, 0, 1)
+		>;
+		pinctrl-single,slew-rate = <
+			PINCTRL_SLEW_RATE(1, 1)
+		>;
+		pinctrl-single,drive-strength = <
+			PINCTRL_DRV_STRENGTH(0x9, 0xf)
+		>;
+	};
+
+	emmc_pins_3: emmc-pins-3 {
+		pinctrl-single,pins = <
+			0x02c MUX_M2
+		>;
+		pinctrl-single,bias-pulldown = <
+			PINCTRL_PULLDOWN(0, 1, 0, 1)
+		>;
+		pinctrl-single,bias-pullup = <
+			PINCTRL_PULLUP(0, 1, 0, 1)
+		>;
+		pinctrl-single,slew-rate = <
+			PINCTRL_SLEW_RATE(1, 1)
+		>;
+		pinctrl-single,drive-strength = <
+			PINCTRL_DRV_STRENGTH(3, 3)
+		>;
+	};
+
+	emmc_pins_4: emmc-pins-4 {
+		pinctrl-single,pins = <
+			0x030 MUX_M2
+		>;
+		pinctrl-single,bias-pulldown = <
+			PINCTRL_PULLDOWN(1, 1, 0, 1)
+		>;
+		pinctrl-single,bias-pullup = <
+			PINCTRL_PULLUP(0, 1, 0, 1)
+		>;
+		pinctrl-single,slew-rate = <
+			PINCTRL_SLEW_RATE(1, 1)
+		>;
+		pinctrl-single,drive-strength = <
+			PINCTRL_DRV_STRENGTH(3, 3)
+		>;
+	};
+};