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espi: it8xxx2: reset PLTRST# virtual wire signal during eSPI reset

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The PLTRST# virtual wire signal's reset signal is eSPI Reset#.
But it8xxx2 didn't enable the feature by default. This change
will enable the feature at default.

Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
This commit is contained in:
Dino Li 2022-11-02 14:37:55 +08:00 • committed by Carles Cufí
commit 8665db1dab
1 changed files with 9 additions and 0 deletions
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9
drivers/espi/espi_it8xxx2.c
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@ -47,6 +47,12 @@ LOG_MODULE_REGISTER(espi, CONFIG_ESPI_LOG_LEVEL);
#define IT8XXX2_ESPI_VW_INTERRUPT_ENABLE BIT(7)
#define IT8XXX2_ESPI_INTERRUPT_PUT_PC BIT(7)
/*
* VWCTRL2 register:
* bit4 = 1b: Refers to ESPI_RESET# for PLTRST#.
*/
#define IT8XXX2_ESPI_VW_RESET_PLTRST BIT(4)
#define IT8XXX2_ESPI_UPSTREAM_ENABLE BIT(7)
#define IT8XXX2_ESPI_UPSTREAM_GO BIT(6)
#define IT8XXX2_ESPI_UPSTREAM_INTERRUPT_ENABLE BIT(5)
@ -1870,6 +1876,9 @@ static int espi_it8xxx2_init(const struct device *dev)
DEVICE_DT_INST_GET(0), 0);
irq_enable(IT8XXX2_ESPI_VW_IRQ);
/* Reset PLTRST# virtual wire signal during eSPI reset */
vw_reg->VWCTRL2 |= IT8XXX2_ESPI_VW_RESET_PLTRST;
#ifdef CONFIG_ESPI_OOB_CHANNEL
espi_it8xxx2_oob_init(dev);
#endif