[U-Boot] [PATCH] ARM SOCFPGA: add resetmgr command so reset can be deasserted in bootcmd (for example on peripheral dma interfaces after fpga has been programmed).

[Frank Mori Hess]

---
 arch/arm/mach-socfpga/reset_manager_gen5.c | 31 ++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/mach-socfpga/reset_manager_gen5.c b/arch/arm/mach-socfpga/reset_manager_gen5.c
index aa88adb414..6ad5d2a362 100644
--- a/arch/arm/mach-socfpga/reset_manager_gen5.c
+++ b/arch/arm/mach-socfpga/reset_manager_gen5.c
@@ -114,3 +114,34 @@ void socfpga_bridges_reset(int enable)
 	return;
 }
 #endif
+
+int resetmgr_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	unsigned long bank;
+	unsigned long offset;
+	unsigned long assert;
+
+	if (argc != 4)
+		return CMD_RET_USAGE;
+
+	bank = simple_strtoul(argv[1], NULL, 0);
+	offset = simple_strtoul(argv[2], NULL, 0);
+	assert = simple_strtoul(argv[3], NULL, 0);
+	socfpga_per_reset(RSTMGR_DEFINE(bank, offset), assert);
+	return 0;
+}
+
+U_BOOT_CMD(
+	resetmgr, 4, 1, resetmgr_cmd,
+	"SoCFPGA HPS reset manager control",
+	"resetmgr bank offset assert\n"
+	"    bank - Bank of reset to assert/deassert.\n"
+	"        0 ... mpumodrst\n"
+	"        1 ... permodrst\n"
+	"        2 ... per2modrst\n"
+	"        3 ... brgmodrst\n"
+	"        4 ... miscmodrst\n"
+	"    offset - Offset of reset to assert/deassert.\n"
+	"    assert - 1 to assert reset, 0 to deassert.\n"
+	""
+);
-- 
2.11.0