On Tue, Apr 16, 2019 at 20:27:22, Vidya Sagar <[email protected]> wrote:
> Add support to enable CDM (Configuration Dependent Module) register check > for any data corruption based on the device-tree flag 'enable-cdm-check'. > > Signed-off-by: Vidya Sagar <[email protected]> > --- > Changes since [v2]: > * Changed code and commit description to reflect change in flag from > 'cdm-check' to 'enable-cdm-check' > > Changes since [v1]: > * This is a new patch in v2 series > > drivers/pci/controller/dwc/pcie-designware.c | 7 +++++++ > drivers/pci/controller/dwc/pcie-designware.h | 9 +++++++++ > 2 files changed, 16 insertions(+) > > diff --git a/drivers/pci/controller/dwc/pcie-designware.c > b/drivers/pci/controller/dwc/pcie-designware.c > index 44c0ba078452..5b416f483426 100644 > --- a/drivers/pci/controller/dwc/pcie-designware.c > +++ b/drivers/pci/controller/dwc/pcie-designware.c > @@ -503,4 +503,11 @@ void dw_pcie_setup(struct dw_pcie *pci) > break; > } > dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, val); > + > + if (of_property_read_bool(np, "enable-cdm-check")) { > + val = dw_pcie_readl_dbi(pci, PCIE_PL_CHK_REG_CONTROL_STATUS); > + val |= PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS | > + PCIE_PL_CHK_REG_CHK_REG_START; > + dw_pcie_writel_dbi(pci, PCIE_PL_CHK_REG_CONTROL_STATUS, val); > + } > } > diff --git a/drivers/pci/controller/dwc/pcie-designware.h > b/drivers/pci/controller/dwc/pcie-designware.h > index fa41d675c48f..7f57fe019fbf 100644 > --- a/drivers/pci/controller/dwc/pcie-designware.h > +++ b/drivers/pci/controller/dwc/pcie-designware.h > @@ -83,6 +83,15 @@ > #define PCIE_MISC_CONTROL_1_OFF 0x8BC > #define PCIE_DBI_RO_WR_EN BIT(0) > > +#define PCIE_PL_CHK_REG_CONTROL_STATUS 0xB20 > +#define PCIE_PL_CHK_REG_CHK_REG_START BIT(0) > +#define PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS BIT(1) > +#define PCIE_PL_CHK_REG_CHK_REG_COMPARISON_ERROR BIT(16) > +#define PCIE_PL_CHK_REG_CHK_REG_LOGIC_ERROR BIT(17) > +#define PCIE_PL_CHK_REG_CHK_REG_COMPLETE BIT(18) > + > +#define PCIE_PL_CHK_REG_ERR_ADDR 0xB28 > + > /* > * iATU Unroll-specific register definitions > * From 4.80 core version the address translation will be made by unroll > -- > 2.17.1 Nice. Acked-by: Gustavo Pimentel <[email protected]> Thanks, Gustavo
