From: Valentin Longchamp valentin.longchamp@keymile.com
The PCIe FPGAs now have to support 2 resets: one for the non traffic affecting part (PCIe) and one for the traffic affecting part.
When the FPGA is not reconfigured, we only reset the PCIe part.
Signed-off-by: Valentin Longchamp valentin.longchamp@keymile.com --- board/keymile/km_arm/fpga_config.c | 11 ++++++++--- 1 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/board/keymile/km_arm/fpga_config.c b/board/keymile/km_arm/fpga_config.c index fdc8727..fcc5fe6 100644 --- a/board/keymile/km_arm/fpga_config.c +++ b/board/keymile/km_arm/fpga_config.c @@ -206,25 +206,30 @@ int wait_for_fpga_config(void) }
#define PRST1 0x4 -#define BRIDGE_RST 0x4 +#define PCIE_RST 0x10 +#define TRAFFIC_RST 0x04
int fpga_reset(void) { int ret = 0; + u8 resets;
if (!check_boco2()) { /* we do not have BOCO2, this is not really used */ return 0; }
- ret = boco_clear_bits(PRST1, BRIDGE_RST); + /* if we have skipped, we only want to reset the PCIe part */ + resets = skip ? PCIE_RST : PCIE_RST | TRAFFIC_RST; + + ret = boco_clear_bits(PRST1, resets); if (ret) return ret;
/* small delay for the pulse */ udelay(10);
- ret = boco_set_bits(PRST1, BRIDGE_RST); + ret = boco_set_bits(PRST1, resets); if (ret) return ret;