[uboot] create uboot from github:

repo: https://github.com/u-boot/u-boot
	commit: d80bb749fab53da72c4a0e09b8c2d2aaa3103c91

Change-Id: Ie6434426e1ec15bc08bb1832798e371f3fd5fb29

u-boot-2021.10/drivers/ram/k3-ddrss/lpddr4_obj_if.c

@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Cadence DDR Driver
+ *
+ * Copyright (C) 2012-2021 Cadence Design Systems, Inc.
+ * Copyright (C) 2018-2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include "lpddr4_obj_if.h"
+
+lpddr4_obj *lpddr4_getinstance(void)
+{
+	static lpddr4_obj driver = {
+		.probe				= lpddr4_probe,
+		.init				= lpddr4_init,
+		.start				= lpddr4_start,
+		.readreg			= lpddr4_readreg,
+		.writereg			= lpddr4_writereg,
+		.getmmrregister			= lpddr4_getmmrregister,
+		.setmmrregister			= lpddr4_setmmrregister,
+		.writectlconfig			= lpddr4_writectlconfig,
+		.writephyconfig			= lpddr4_writephyconfig,
+		.writephyindepconfig		= lpddr4_writephyindepconfig,
+		.readctlconfig			= lpddr4_readctlconfig,
+		.readphyconfig			= lpddr4_readphyconfig,
+		.readphyindepconfig		= lpddr4_readphyindepconfig,
+		.getctlinterruptmask		= lpddr4_getctlinterruptmask,
+		.setctlinterruptmask		= lpddr4_setctlinterruptmask,
+		.checkctlinterrupt		= lpddr4_checkctlinterrupt,
+		.ackctlinterrupt		= lpddr4_ackctlinterrupt,
+		.getphyindepinterruptmask	= lpddr4_getphyindepinterruptmask,
+		.setphyindepinterruptmask	= lpddr4_setphyindepinterruptmask,
+		.checkphyindepinterrupt		= lpddr4_checkphyindepinterrupt,
+		.ackphyindepinterrupt		= lpddr4_ackphyindepinterrupt,
+		.getdebuginitinfo		= lpddr4_getdebuginitinfo,
+		.getlpiwakeuptime		= lpddr4_getlpiwakeuptime,
+		.setlpiwakeuptime		= lpddr4_setlpiwakeuptime,
+		.geteccenable			= lpddr4_geteccenable,
+		.seteccenable			= lpddr4_seteccenable,
+		.getreducmode			= lpddr4_getreducmode,
+		.setreducmode			= lpddr4_setreducmode,
+		.getdbireadmode			= lpddr4_getdbireadmode,
+		.getdbiwritemode		= lpddr4_getdbiwritemode,
+		.setdbimode			= lpddr4_setdbimode,
+		.getrefreshrate			= lpddr4_getrefreshrate,
+		.setrefreshrate			= lpddr4_setrefreshrate,
+		.refreshperchipselect		= lpddr4_refreshperchipselect,
+	};
+
+	return &driver;
+}