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 --- changes for v2 and v3: simply rebased
board/keymile/km_arm/fpga_config.c | 13 +++++++++---- 1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/board/keymile/km_arm/fpga_config.c b/board/keymile/km_arm/fpga_config.c index 8ac6393..fcc5fe6 100644 --- a/board/keymile/km_arm/fpga_config.c +++ b/board/keymile/km_arm/fpga_config.c @@ -99,7 +99,7 @@ static int boco_set_bits(u8 reg, u8 flags) #define FPGA_INIT_B 0x10 #define FPGA_DONE 0x20
-static int fpga_done() +static int fpga_done(void) { int ret = 0; u8 regval; @@ -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;