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clk: rk3399: Add enable/disable clks

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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@amarulasolutions.com>
Tested-by: Suniel Mahesh <sunil.m@amarulasolutions.com> # roc-rk3399-pc
Tested-by: Suniel Mahesh <sunil@amarulasolutions.com> #roc-rk3399-pc
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Jagan Teki 2020-05-09 22:26:19 +05:30 committed by Kever Yang
parent 1266ef105f
commit 30d09a2f17
1 changed files with 148 additions and 0 deletions
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148
drivers/clk/rockchip/clk_rk3399.c
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@ -1074,12 +1074,160 @@ static int __maybe_unused rk3399_clk_set_parent(struct clk *clk,
return -ENOENT; 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->clkgate_con[12], BIT(1));
break;
case SCLK_USB3OTG1_REF:
rk_clrreg(&priv->cru->clkgate_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->clkgate_con[12], BIT(1));
break;
case SCLK_USB3OTG1_REF:
rk_setreg(&priv->cru->clkgate_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 = { static struct clk_ops rk3399_clk_ops = {
.get_rate = rk3399_clk_get_rate, .get_rate = rk3399_clk_get_rate,
.set_rate = rk3399_clk_set_rate, .set_rate = rk3399_clk_set_rate,
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
.set_parent = rk3399_clk_set_parent, .set_parent = rk3399_clk_set_parent,
#endif #endif
.enable = rk3399_clk_enable,
.disable = rk3399_clk_disable,
}; };
#ifdef CONFIG_SPL_BUILD #ifdef CONFIG_SPL_BUILD