[U-Boot] [PATCH v2 09/18] clk: rockchip: Add rk3328 gamc clock support

[David Wu]

The rk3328 soc has two gmac controllers, one is gmac2io,
the other is gmac2phy. We use the gmac2io rgmii interface
for 1000M phy here.

Signed-off-by: David Wu <david.wu at rock-chips.com>
---

Changes in v2:
- New patch

 drivers/clk/rockchip/clk_rk3328.c      | 20 ++++++++++++++++++++
 include/dt-bindings/clock/rk3328-cru.h |  6 +++---
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/rockchip/clk_rk3328.c b/drivers/clk/rockchip/clk_rk3328.c
index 540d910..0940474 100644
--- a/drivers/clk/rockchip/clk_rk3328.c
+++ b/drivers/clk/rockchip/clk_rk3328.c
@@ -13,6 +13,7 @@
 #include <asm/arch/clock.h>
 #include <asm/arch/cru_rk3328.h>
 #include <asm/arch/hardware.h>
+#include <asm/arch/grf_rk3328.h>
 #include <asm/io.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3328-cru.h>
@@ -393,6 +394,22 @@ static ulong rk3328_i2c_set_clk(struct rk3328_cru *cru, ulong clk_id, uint hz)
 	return DIV_TO_RATE(GPLL_HZ, src_clk_div);
 }
 
+static int rockchip_mac_set_clk(struct rk3328_cru *cru,
+				int periph, uint freq)
+{
+	struct rk3328_grf_regs *grf;
+
+	grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+	/* Assuming mac_clk is fed by an external clock */
+	rk_clrsetreg(&grf->soc_con[4], BIT(14),
+		     BIT(14));
+
+	rk_clrsetreg(&grf->mac_con[1], BIT(10),
+		     BIT(10));
+
+	return 0;
+}
+
 static ulong rk3328_mmc_get_clk(struct rk3328_cru *cru, uint clk_id)
 {
 	u32 div, con, con_id;
@@ -558,6 +575,9 @@ static ulong rk3328_clk_set_rate(struct clk *clk, ulong rate)
 	case SCLK_I2C3:
 		ret = rk3328_i2c_set_clk(priv->cru, clk->id, rate);
 		break;
+	case SCLK_MAC2IO:
+		ret = rockchip_mac_set_clk(priv->cru, clk->id, rate);
+		break;
 	case SCLK_PWM:
 		ret = rk3328_pwm_set_clk(priv->cru, rate);
 		break;
diff --git a/include/dt-bindings/clock/rk3328-cru.h b/include/dt-bindings/clock/rk3328-cru.h
index 6d8bf13..cdc0b33 100644
--- a/include/dt-bindings/clock/rk3328-cru.h
+++ b/include/dt-bindings/clock/rk3328-cru.h
@@ -86,6 +86,9 @@
 #define SCLK_USB3OTG_SUSPEND	97
 #define SCLK_REF_USB3OTG_SRC	98
 #define SCLK_MAC2IO_SRC		99
+#define SCLK_MAC2IO		100
+#define SCLK_MAC2PHY		101
+#define SCLK_MAC2IO_EXT		102
 
 /* dclk gates */
 #define DCLK_LCDC		180
@@ -199,9 +202,6 @@
 
 #define CLK_NR_CLKS		(HCLK_HDCP + 1)
 
-#define SCLK_MAC2IO		0
-#define SCLK_MAC2PHY		1
-
 #define CLKGRF_NR_CLKS		(SCLK_MAC2PHY + 1)
 
 /* soft-reset indices */
-- 
2.7.4