[PATCH v2 3/8] clk: rk3399: Add enable/disable clks

[Jagan Teki]

Yes, most of the high speed peripheral clocks
in rk3399 enabled by default.

But it would be better to handle them via clk
enable/disable API for handling proper reset
conditions like 'usb reset' over command line.

So, enable USB, GMAC clock via enable/disable ops.

Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
Changes for v2:
- new patch

 drivers/clk/rockchip/clk_rk3399.c | 148 ++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)

diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c
index d822acace1..df70e9fa88 100644
--- a/drivers/clk/rockchip/clk_rk3399.c
+++ b/drivers/clk/rockchip/clk_rk3399.c
@@ -1071,12 +1071,160 @@ static int __maybe_unused rk3399_clk_set_parent(struct clk *clk,
 	return -ENOENT;
 }
 
+static int rk3399_clk_enable(struct clk *clk)
+{
+	struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case SCLK_MAC:
+		rk_clrreg(&priv->cru->clkgate_con[5], BIT(5));
+		break;
+	case SCLK_MAC_RX:
+		rk_clrreg(&priv->cru->clkgate_con[5], BIT(8));
+		break;
+	case SCLK_MAC_TX:
+		rk_clrreg(&priv->cru->clkgate_con[5], BIT(9));
+		break;
+	case SCLK_MACREF:
+		rk_clrreg(&priv->cru->clkgate_con[5], BIT(7));
+		break;
+	case SCLK_MACREF_OUT:
+		rk_clrreg(&priv->cru->clkgate_con[5], BIT(6));
+		break;
+	case ACLK_GMAC:
+		rk_clrreg(&priv->cru->clkgate_con[32], BIT(0));
+		break;
+	case PCLK_GMAC:
+		rk_clrreg(&priv->cru->clkgate_con[32], BIT(2));
+		break;
+	case SCLK_USB3OTG0_REF:
+		rk_clrreg(&priv->cru->clksel_con[12], BIT(1));
+		break;
+	case SCLK_USB3OTG1_REF:
+		rk_clrreg(&priv->cru->clksel_con[12], BIT(2));
+		break;
+	case SCLK_USB3OTG0_SUSPEND:
+		rk_clrreg(&priv->cru->clkgate_con[12], BIT(3));
+		break;
+	case SCLK_USB3OTG1_SUSPEND:
+		rk_clrreg(&priv->cru->clkgate_con[12], BIT(4));
+		break;
+	case ACLK_USB3OTG0:
+		rk_clrreg(&priv->cru->clkgate_con[30], BIT(1));
+		break;
+	case ACLK_USB3OTG1:
+		rk_clrreg(&priv->cru->clkgate_con[30], BIT(2));
+		break;
+	case ACLK_USB3_RKSOC_AXI_PERF:
+		rk_clrreg(&priv->cru->clkgate_con[30], BIT(3));
+		break;
+	case ACLK_USB3:
+		rk_clrreg(&priv->cru->clkgate_con[12], BIT(0));
+		break;
+	case ACLK_USB3_GRF:
+		rk_clrreg(&priv->cru->clkgate_con[30], BIT(4));
+		break;
+	case HCLK_HOST0:
+		rk_clrreg(&priv->cru->clksel_con[20], BIT(5));
+		break;
+	case HCLK_HOST0_ARB:
+		rk_clrreg(&priv->cru->clksel_con[20], BIT(6));
+		break;
+	case HCLK_HOST1:
+		rk_clrreg(&priv->cru->clksel_con[20], BIT(7));
+		break;
+	case HCLK_HOST1_ARB:
+		rk_clrreg(&priv->cru->clksel_con[20], BIT(8));
+		break;
+	default:
+		debug("%s: unsupported clk %ld\n", __func__, clk->id);
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
+static int rk3399_clk_disable(struct clk *clk)
+{
+	struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case SCLK_MAC:
+		rk_setreg(&priv->cru->clkgate_con[5], BIT(5));
+		break;
+	case SCLK_MAC_RX:
+		rk_setreg(&priv->cru->clkgate_con[5], BIT(8));
+		break;
+	case SCLK_MAC_TX:
+		rk_setreg(&priv->cru->clkgate_con[5], BIT(9));
+		break;
+	case SCLK_MACREF:
+		rk_setreg(&priv->cru->clkgate_con[5], BIT(7));
+		break;
+	case SCLK_MACREF_OUT:
+		rk_setreg(&priv->cru->clkgate_con[5], BIT(6));
+		break;
+	case ACLK_GMAC:
+		rk_setreg(&priv->cru->clkgate_con[32], BIT(0));
+		break;
+	case PCLK_GMAC:
+		rk_setreg(&priv->cru->clkgate_con[32], BIT(2));
+		break;
+	case SCLK_USB3OTG0_REF:
+		rk_setreg(&priv->cru->clksel_con[12], BIT(1));
+		break;
+	case SCLK_USB3OTG1_REF:
+		rk_setreg(&priv->cru->clksel_con[12], BIT(2));
+		break;
+	case SCLK_USB3OTG0_SUSPEND:
+		rk_setreg(&priv->cru->clkgate_con[12], BIT(3));
+		break;
+	case SCLK_USB3OTG1_SUSPEND:
+		rk_setreg(&priv->cru->clkgate_con[12], BIT(4));
+		break;
+	case ACLK_USB3OTG0:
+		rk_setreg(&priv->cru->clkgate_con[30], BIT(1));
+		break;
+	case ACLK_USB3OTG1:
+		rk_setreg(&priv->cru->clkgate_con[30], BIT(2));
+		break;
+	case ACLK_USB3_RKSOC_AXI_PERF:
+		rk_setreg(&priv->cru->clkgate_con[30], BIT(3));
+		break;
+	case ACLK_USB3:
+		rk_setreg(&priv->cru->clkgate_con[12], BIT(0));
+		break;
+	case ACLK_USB3_GRF:
+		rk_setreg(&priv->cru->clkgate_con[30], BIT(4));
+		break;
+	case HCLK_HOST0:
+		rk_setreg(&priv->cru->clksel_con[20], BIT(5));
+		break;
+	case HCLK_HOST0_ARB:
+		rk_setreg(&priv->cru->clksel_con[20], BIT(6));
+		break;
+	case HCLK_HOST1:
+		rk_setreg(&priv->cru->clksel_con[20], BIT(7));
+		break;
+	case HCLK_HOST1_ARB:
+		rk_setreg(&priv->cru->clksel_con[20], BIT(8));
+		break;
+	default:
+		debug("%s: unsupported clk %ld\n", __func__, clk->id);
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
 static struct clk_ops rk3399_clk_ops = {
 	.get_rate = rk3399_clk_get_rate,
 	.set_rate = rk3399_clk_set_rate,
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.set_parent = rk3399_clk_set_parent,
 #endif
+	.enable = rk3399_clk_enable,
+	.disable = rk3399_clk_disable,
 };
 
 #ifdef CONFIG_SPL_BUILD
-- 
2.17.1