ARM: socfpga: Fully unmap the FPGA bridges from L3 space

Instead of just putting the bridges into reset, fully remove the bridges
from the L3 main bridge space when disabling them by clearing bits in
NIC-301 remap register. Moreover, only touch the 3 LSbits in brgmodrst
register as the rest of the bits are undefined.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

diff --git a/arch/arm/mach-socfpga/reset_manager_gen5.c b/arch/arm/mach-socfpga/reset_manager_gen5.c
index 66af924485ef677d0e766f59bb2c0c477c7d6206..89a384b59c84c085f3202e4dfc2004996999009e 100644 (file)
--- a/arch/arm/mach-socfpga/reset_manager_gen5.c
+++ b/arch/arm/mach-socfpga/reset_manager_gen5.c
@@ -103,7 +103,8 @@ void socfpga_bridges_reset(int enable)
 
        if (enable) {
                /* brdmodrst */
-               writel(0xffffffff, &reset_manager_base->brg_mod_reset);
+               writel(0x7, &reset_manager_base->brg_mod_reset);
+               writel(L3REGS_REMAP_OCRAM_MASK, SOCFPGA_L3REGS_ADDRESS);
        } else {
                socfpga_bridges_set_handoff_regs(false, false, false);