From: zhengxing <zhengxing@xxxxxxxxxxxxxx>
In the emac driver, we need to refer HCLK_MAC since there are
only 3PLLs (APLL/GPLL/DPLL) on the rk3036, most clocks are under the
GPLL, and it is unable to provide the accurate rate for mac_ref which
need to 50MHz probability, we should let it under the DPLL and are
able to set the freq which integer multiples of 50MHz, so we add these
emac node for reference.
Signed-off-by: Xing Zheng <zhengxing@xxxxxxxxxxxxxx>
Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx>
---
drivers/clk/rockchip/clk-rk3036.c | 9 ++++++---
include/dt-bindings/clock/rk3036-cru.h | 2 ++
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/rockchip/clk-rk3036.c b/drivers/clk/rockchip/clk-rk3036.c
index 0703c8f..27c35fa 100644
--- a/drivers/clk/rockchip/clk-rk3036.c
+++ b/drivers/clk/rockchip/clk-rk3036.c
@@ -348,8 +348,11 @@ static struct rockchip_clk_branch rk3036_clk_branches[] __initdata = {
RK2928_CLKSEL_CON(16), 0, 2, MFLAGS, 2, 5, DFLAGS,
RK2928_CLKGATE_CON(10), 5, GFLAGS),
- COMPOSITE_NOGATE(0, "mac_pll_src", mux_pll_src_3plls_p, 0,
- RK2928_CLKSEL_CON(21), 0, 2, MFLAGS, 9, 5, DFLAGS),
+ MUX(SCLK_MACPLL, "mac_pll_pre", mux_pll_src_3plls_p, 0,
+ RK2928_CLKSEL_CON(21), 0, 2, MFLAGS),
+ DIV(0, "mac_pll_src", "mac_pll_pre", 0,
+ RK2928_CLKSEL_CON(21), 9, 5, DFLAGS),
+
MUX(SCLK_MACREF, "mac_clk_ref", mux_mac_p, CLK_SET_RATE_PARENT,
RK2928_CLKSEL_CON(21), 3, 1, MFLAGS),
@@ -408,7 +411,7 @@ static struct rockchip_clk_branch rk3036_clk_branches[] __initdata = {
GATE(HCLK_OTG1, "hclk_otg1", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(7), 3, GFLAGS),
GATE(HCLK_I2S, "hclk_i2s", "hclk_peri", 0, RK2928_CLKGATE_CON(7), 2, GFLAGS),
GATE(0, "hclk_sfc", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(3), 14, GFLAGS),
- GATE(0, "hclk_mac", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(3), 15, GFLAGS),
+ GATE(HCLK_MAC, "hclk_mac", "hclk_peri", 0, RK2928_CLKGATE_CON(3), 5, GFLAGS),
/* pclk_peri gates */
GATE(0, "pclk_peri_matrix", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 1, GFLAGS),
diff --git a/include/dt-bindings/clock/rk3036-cru.h b/include/dt-bindings/clock/rk3036-cru.h
index ebc7a7b..de44109 100644
--- a/include/dt-bindings/clock/rk3036-cru.h
+++ b/include/dt-bindings/clock/rk3036-cru.h
@@ -54,6 +54,7 @@
#define SCLK_PVTM_VIDEO 125
#define SCLK_MAC 151
#define SCLK_MACREF 152
+#define SCLK_MACPLL 153
#define SCLK_SFC 160
/* aclk gates */
@@ -92,6 +93,7 @@
#define HCLK_SDMMC 456
#define HCLK_SDIO 457
#define HCLK_EMMC 459
+#define HCLK_MAC 460
#define HCLK_I2S 462
#define HCLK_LCDC 465
#define HCLK_ROM 467
--
1.9.1
--
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