From 5775c86aa48c99014981595cd979400213d03e94 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Tue, 16 Apr 2019 14:19:34 +0200 Subject: [PATCH] ARM: socfpga: Disable bridges in SPL unless booting from FPGA Disable bridges between L3 Main switch and FPGA unless booting from FPGA and keep them disabled to prevent glitches and possible hangs of the L3 Main switch. The current version of the code could have enabled the bridges between the L3 Main switch and FPGA for a short period of time in board_init_f() in case the FPGA was programmed and then again disable them at the end of board_init_f(). Replace this with a code which only sets up the handoff registers and let the user enable the bridges later on. Signed-off-by: Marek Vasut Cc: Chin Liang See Cc: Dinh Nguyen Cc: Simon Goldschmidt Cc: Tien Fong Chee --- arch/arm/mach-socfpga/spl_gen5.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-socfpga/spl_gen5.c b/arch/arm/mach-socfpga/spl_gen5.c index 9dd0afb4bc..bd2a9fe5ae 100644 --- a/arch/arm/mach-socfpga/spl_gen5.c +++ b/arch/arm/mach-socfpga/spl_gen5.c @@ -175,8 +175,9 @@ void board_init_f(ulong dummy) sysmgr_pinmux_init(); sysmgr_config_warmrstcfgio(0); - /* De-assert reset for bridges based on handoff */ - socfpga_bridges_reset(0); + /* De-assert reset for peripherals and bridges based on handoff */ + reset_deassert_peripherals_handoff(); + socfpga_bridges_set_handoff_regs(true, true, true); debug("Unfreezing/Thaw all I/O banks\n"); /* unfreeze / thaw all IO banks */ @@ -205,7 +206,4 @@ void board_init_f(ulong dummy) debug("DRAM init failed: %d\n", ret); hang(); } - - if (!socfpga_is_booting_from_fpga()) - socfpga_bridges_reset(1); } -- 2.39.5