@@ -1233,6 +1233,7 @@ static void sdhci_esdhc_imx_hwinit(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
+ struct cqhci_host *cq_host = host->mmc->cqe_private;
int tmp;
if (esdhc_is_usdhc(imx_data)) {
@@ -1309,6 +1310,21 @@ static void sdhci_esdhc_imx_hwinit(struct sdhci_host *host)
tmp &= ~ESDHC_STD_TUNING_EN;
writel(tmp, host->ioaddr + ESDHC_TUNING_CTRL);
}
+
+ /*
+ * On i.MX8MM, we are running Dual Linux OS, with 1st Linux using SD Card
+ * as rootfs storage, 2nd Linux using eMMC as rootfs storage. We let the
+ * the 1st linux configure power/clock for the 2nd Linux.
+ *
+ * When the 2nd Linux is booting into rootfs stage, we let the 1st Linux
+ * to destroy the 2nd linux, then restart the 2nd linux, we met SDHCI dump.
+ * After we clear the pending interrupt and halt CQCTL, issue gone.
+ */
+ if (cq_host) {
+ tmp = cqhci_readl(cq_host, CQHCI_IS);
+ cqhci_writel(cq_host, tmp, CQHCI_IS);
+ cqhci_writel(cq_host, CQHCI_HALT, CQHCI_CTL);
+ }
}
}