sunxi: clk: A80: add MMC clock support

The A80 handles resets and clock gates for the MMC devices differently,
outside of the CCU IP block. Consequently we have a separate clock
device with a separate binding for that.

Implement that with the respective clock gates and resets to allow the
A80 taking part in the DM_MMC game.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[jagan: fix a80 mmc clock config compatible]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

diff --git a/drivers/clk/sunxi/clk_a80.c b/drivers/clk/sunxi/clk_a80.c
index d4bfb0a98b3b2b513bb352b39652a2b07174cd3a..aec1d80c46d9b200a87907ff0b9067976ea33e76 100644 (file)
--- a/drivers/clk/sunxi/clk_a80.c
+++ b/drivers/clk/sunxi/clk_a80.c
@@ -34,19 +34,45 @@ static const struct ccu_reset a80_resets[] = {
        [RST_BUS_UART5]         = RESET(0x5b4, BIT(21)),
 };
 
+static const struct ccu_clk_gate a80_mmc_gates[] = {
+       [0]                     = GATE(0x0, BIT(16)),
+       [1]                     = GATE(0x4, BIT(16)),
+       [2]                     = GATE(0x8, BIT(16)),
+       [3]                     = GATE(0xc, BIT(16)),
+};
+
+static const struct ccu_reset a80_mmc_resets[] = {
+       [0]                     = GATE(0x0, BIT(18)),
+       [1]                     = GATE(0x4, BIT(18)),
+       [2]                     = GATE(0x8, BIT(18)),
+       [3]                     = GATE(0xc, BIT(18)),
+};
+
 static const struct ccu_desc a80_ccu_desc = {
        .gates = a80_gates,
        .resets = a80_resets,
 };
 
+static const struct ccu_desc a80_mmc_clk_desc = {
+       .gates = a80_mmc_gates,
+       .resets = a80_mmc_resets,
+};
+
 static int a80_clk_bind(struct udevice *dev)
 {
-       return sunxi_reset_bind(dev, ARRAY_SIZE(a80_resets));
+       ulong count = ARRAY_SIZE(a80_resets);
+
+       if (device_is_compatible(dev, "allwinner,sun9i-a80-mmc-config-clk"))
+               count = ARRAY_SIZE(a80_mmc_resets);
+
+       return sunxi_reset_bind(dev, count);
 }
 
 static const struct udevice_id a80_ccu_ids[] = {
        { .compatible = "allwinner,sun9i-a80-ccu",
          .data = (ulong)&a80_ccu_desc },
+       { .compatible = "allwinner,sun9i-a80-mmc-config-clk",
+         .data = (ulong)&a80_mmc_clk_desc },
        { }
 };