[PATCH v2 1/3] devicetree: bindings: Document qcom, msm-id and qcom, board-id

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+* MSM-ID
+
+The qcom,msm-id entry specifies the MSM chipset and hardware revision.  It can
+optionally be an array of these to indicate multiple hardware that use the same
+device tree.  It is expected that the bootloader will use this information at
+boot-up to decide which device tree to use when given multiple device trees,
+some of which may not be compatible with the actual hardware.  It is the
+bootloader's responsibility to pass the correct device tree to the kernel.
+
+PROPERTIES
+
+- qcom,msm-id:
+	Usage: required
+	Value type: <prop-encoded-array> (<chipset_id, rev_id> [, <c2, r2> ..])
+	Definition:
+		The "chipset_id" consists of three fields as below:
+
+		bits 0-15  = The unique MSM chipset id.
+		bits 16-31 = Reserved.  Should be 0
+
+		chipset_id is an exact match value
+
+		The "rev_id" is a chipset specific 32-bit id that represents
+		the version of the chipset.
+
+		The rev_id is a best match id.  The bootloader will look for
+		the closest possible patch.
+
+* BOARD-ID
+
+The qcom,board-id entry specifies the board type and revision information.  It
+can optionally be an array of these to indicate multiple boards that use the
+same device tree.  It is expected that the bootloader will use this information
+at boot-up to decide which device tree to use when given multiple device trees,
+some of which may not be compatible with the actual hardware.  It is the
+bootloader's responsibility to pass the correct device tree to the kernel.
+
+PROPERTIES
+
+- qcom,board-id:
+	Usage: required
+	Value type: <prop-encoded-array> (<board_id, subtype_id> [, <b2, s2> ..])
+	Definition:
+		The "board_id" consists of three fields as below:
+
+		bits 31-24 = Unusued.
+		bits 23-16 = Platform Version Major
+		bits 15-8  = Platfrom Version Minor
+		bits 7-0   = Platform Type
+
+		Platform Type field is an exact match value.  The Platform
+		Major/Minor field is a best match.  The bootloader will look
+		for the closest possible match.
+
+		The "subtype_id" is unique to a Platform Type/Chipset ID.  For
+		a given Platform Type, there will typically only be a single
+		board and the subtype_id will be 0.  However in some cases board
+		variants may need to be distinquished by different subtype_id
+		values.
+
+		subtype_id is an exact match value.
+
+EXAMPLE:
+	qcom,board-id = <15 2>;
+	qcom,msm-id = <0x1007e 0>;

@@ -0,0 +1,33 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#ifndef __DT_BINDINGS_QCOM_IDS_H
+#define __DT_BINDINGS_QCOM_IDS_H
+
+/* qcom,msm-id */
+#define QCOM_ID_MSM8916		206
+#define QCOM_ID_APQ8016		247
+#define QCOM_ID_MSM8216		248
+#define QCOM_ID_MSM8116		249
+#define QCOM_ID_MSM8616		250
+
+/* qcom,board-id */
+#define QCOM_BRD_ID(a, major, minor) \
+	(((major & 0xff) << 16) | ((minor & 0xff) << 8) | QCOM_BRD_ID_##a)
+
+#define QCOM_BRD_ID_MTP		8
+#define QCOM_BRD_ID_DRAGONBRD	10
+#define QCOM_BRD_ID_SBC		24
+
+#define QCOM_BRD_SUBTYPE_DEFAULT		0
+#define QCOM_BRD_SUBTYPE_MTP8916_SMB1360	1
+
+#endif