[PATCH v2 3/6] mmc: sdhci-of-at91: add LAN969x support

[Robert Marko]

LAN969x uses the same internally generated base clock layout as SAM9X60,
but its SDMMC controller stops responding when runtime PM gates its clocks.
Software resets then fail to complete and the internal SDHCI clock never
stabilises, causing subsequent I/O requests to time out.

Add LAN969x-specific SoC data using the SAM9X60 clock layout and select the
option to leave its clocks enabled across runtime suspend.

Signed-off-by: Robert Marko <robert.marko at sartura.hr>

 drivers/mmc/host/sdhci-of-at91.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index b7e2a89da348..e7affca8da25 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -158,9 +158,17 @@ static const struct sdhci_at91_soc_data soc_data_sam9x60 = {
 	.divider_for_baseclk = 2,
 };
 
+static const struct sdhci_at91_soc_data soc_data_lan969x = {
+	.pdata = &sdhci_sama5d2_pdata,
+	.baseclk_is_generated_internally = true,
+	.keep_clks_on = true,
+	.divider_for_baseclk = 2,
+};
+
 static const struct of_device_id sdhci_at91_dt_match[] = {
 	{ .compatible = "atmel,sama5d2-sdhci", .data = &soc_data_sama5d2 },
 	{ .compatible = "microchip,sam9x60-sdhci", .data = &soc_data_sam9x60 },
+	{ .compatible = "microchip,lan9691-sdhci", .data = &soc_data_lan969x },
 	{}
 };
 MODULE_DEVICE_TABLE(of, sdhci_at91_dt_match);
-- 
2.55.0