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sunxi: clk: A80: add MMC clock support

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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>
This commit is contained in:
Andre Przywara 2019-01-29 15:54:10 +00:00 committed by Jagan Teki
parent bb3e5aa289
commit e0c7ce7e52
1 changed files with 27 additions and 1 deletions
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28
drivers/clk/sunxi/clk_a80.c
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@ -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 },
{ }
};