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drivers: espi: xec: mec172x: Handle eSPI peripheral channel error

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Handle eSPI periperal channel error to avoid continous interrupt
beyond the bus error.

Whenever an eSPI access causes an internal bus error,
PC_BUS_ERROR bit is set, it remains set until cleared by written
with an 1.

Signed-off-by: Jose Alberto Meza <jose.a.meza.arellano@intel.com>
This commit is contained in:
Jose Alberto Meza 2022-02-28 17:15:42 -08:00 • committed by Anas Nashif
commit ee1653985d
1 changed files with 6 additions and 0 deletions
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6
drivers/espi/espi_mchp_xec_v2.c
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@ -852,6 +852,12 @@ static void espi_pc_isr(const struct device *dev)
struct espi_iom_regs *regs = ESPI_XEC_REG_BASE(dev);
uint32_t status = regs->PCSTS;
LOG_DBG("%s %x", __func__, status);
if (status & MCHP_ESPI_PC_STS_BUS_ERR) {
LOG_ERR("%s bus error", __func__);
regs->PCSTS = MCHP_ESPI_PC_STS_BUS_ERR;
}
if (status & MCHP_ESPI_PC_STS_EN_CHG) {
if (status & MCHP_ESPI_PC_STS_EN) {
setup_espi_io_config(dev, MCHP_ESPI_IOBAR_INIT_DFLT);