platform: mellanox: mlx-platform: Add reset cause attribute

Extend IO registers description for some system types with reset cause
attribute "reset_swb_dc_dc_pwr_fail" to indicate reset caused by switch
board DC-DC power failure.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230822113451.13785-6-vadimp@nvidia.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 648b27eff0b084488b7438f4dadd30f0cdbe70ee..8e07ed3dc552ff52ab26bc87e1f422c262b4e4c9 100644 (file)
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -3558,6 +3558,12 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
                .mask = GENMASK(7, 0) & ~BIT(2),
                .mode = 0444,
        },
+       {
+               .label = "reset_swb_dc_dc_pwr_fail",
+               .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(3),
+               .mode = 0444,
+       },
        {
                .label = "reset_from_asic",
                .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,