Add new register to indicate the method of FPGA/CPLD field upgrade
supported on the specific system.
Currently two masks are available:
b00 - field upgrade through LPC gateway (new method introduced to
accelerate field upgrade process).
b11 - field upgrade through CPU GPIO pins (old method).
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxx>
Reviewed-by: Michael Shych <michaelsh@xxxxxxxxxx>
---
drivers/platform/x86/mlx-platform.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 26748c285ddc..647a10252c2f 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -62,6 +62,7 @@
#define MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET 0x37
#define MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET 0x3a
#define MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET 0x3b
+#define MLXPLAT_CPLD_LPC_REG_FU_CAP_OFFSET 0x3c
#define MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET 0x40
#define MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET 0x41
#define MLXPLAT_CPLD_LPC_REG_AGGRCO_OFFSET 0x42
@@ -236,6 +237,7 @@
#define MLXPLAT_CPLD_VOLTREG_UPD_MASK GENMASK(5, 4)
#define MLXPLAT_CPLD_GWP_MASK GENMASK(0, 0)
#define MLXPLAT_CPLD_EROT_MASK GENMASK(1, 0)
+#define MLXPLAT_CPLD_FU_CAP_MASK GENMASK(1, 0)
#define MLXPLAT_CPLD_PWR_BUTTON_MASK BIT(0)
#define MLXPLAT_CPLD_LATCH_RST_MASK BIT(6)
#define MLXPLAT_CPLD_THERMAL1_PDB_MASK BIT(3)
@@ -3680,6 +3682,13 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
.mask = GENMASK(7, 0) & ~BIT(6),
.mode = 0200,
},
+ {
+ .label = "jtag_cap",
+ .reg = MLXPLAT_CPLD_LPC_REG_FU_CAP_OFFSET,
+ .mask = MLXPLAT_CPLD_FU_CAP_MASK,
+ .bit = 1,
+ .mode = 0444,
+ },
{
.label = "jtag_enable",
.reg = MLXPLAT_CPLD_LPC_REG_GP2_OFFSET,
@@ -4935,6 +4944,7 @@ static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_SAFE_BIOS_OFFSET:
case MLXPLAT_CPLD_LPC_SAFE_BIOS_WP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FU_CAP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG3_OFFSET:
@@ -5046,6 +5056,7 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_SAFE_BIOS_WP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FU_CAP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG3_OFFSET:
@@ -5203,6 +5214,7 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_SAFE_BIOS_WP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FU_CAP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_DBG3_OFFSET:
--
2.20.1
