[PATCH 13/31] clk: rockchip: rk3399: Add dummy support for SCLK_PCIEPHY_REF clock

[Jonas Karlman]

rk3399-nanopi-4.dtsi try to set parent of and set rate to 100 MHz of the
SCLK_PCIEPHY_REF clock.

The existing enable/disable ops for SCLK_PCIEPHY_REF already handles
setting correct parent once the clock gets enabled. And 100 MHz is the
default rate used for this clock.

Add dummy support for setting parent, getting and setting clock rate of
the SCLK_PCIEPHY_REF clock to allow use of PCIe on affected boards.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
 drivers/clk/rockchip/clk_rk3399.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c
index 5934771b4096..29b01abeca06 100644
--- a/drivers/clk/rockchip/clk_rk3399.c
+++ b/drivers/clk/rockchip/clk_rk3399.c
@@ -972,6 +972,7 @@ static ulong rk3399_clk_get_rate(struct clk *clk)
 	case ACLK_GIC_PRE:
 	case PCLK_DDR:
 	case ACLK_VDU:
+	case SCLK_PCIEPHY_REF:
 		break;
 	case PCLK_ALIVE:
 	case PCLK_WDT:
@@ -1063,6 +1064,7 @@ static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
 	case ACLK_GIC_PRE:
 	case PCLK_DDR:
 	case ACLK_VDU:
+	case SCLK_PCIEPHY_REF:
 		return 0;
 	default:
 		log_debug("Unknown clock %lu\n", clk->id);
@@ -1114,6 +1116,8 @@ static int __maybe_unused rk3399_clk_set_parent(struct clk *clk,
 	switch (clk->id) {
 	case SCLK_RMII_SRC:
 		return rk3399_gmac_set_parent(clk, parent);
+	case SCLK_PCIEPHY_REF:
+		return 0;
 	}
 
 	debug("%s: unsupported clk %ld\n", __func__, clk->id);
-- 
2.43.2