On 09/01/2025 10:03, Ivaylo Ivanov wrote:
> +static void exynos_usi_unconfigure(void *data)
> +{
> + struct exynos_usi *usi = data;
> + u32 val;
> +
> + /* Make sure that we've stopped providing the clock to USI IP */
> + val = readl(usi->regs + USI_OPTION);
> + val &= ~USI_OPTION_CLKREQ_ON;
> + val |= ~USI_OPTION_CLKSTOP_ON;
> + writel(val, usi->regs + USI_OPTION);
> +
> + /* Set USI block state to reset */
> + val = readl(usi->regs + USI_CON);
> + val |= USI_CON_RESET;
> + writel(val, usi->regs + USI_CON);
Also shouldn't you enable clocks for accessing these? They are being
disabled at the end of exynos_usi_enable().
Best regards,
Krzysztof
