[RFC PATCH 2/4] clk: rockchip: rk3399: add ddrc clock support
From: Lin Huang <hidden>
Date: 2016-06-01 09:36:10
Also in:
dri-devel, linux-clk, linux-rockchip, lkml
Subsystem:
arm/rockchip soc support, common clk framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Heiko Stuebner, Michael Turquette, Stephen Boyd, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
add ddrc clock setting, so we can do ddr frequency scaling on rk3399 platform in future. Signed-off-by: Lin Huang <redacted> --- drivers/clk/rockchip/clk-rk3399.c | 16 ++++++++++++++++ include/dt-bindings/clock/rk3399-cru.h | 1 + 2 files changed, 17 insertions(+)
diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c
index f1d8e44..749ea59 100644
--- a/drivers/clk/rockchip/clk-rk3399.c
+++ b/drivers/clk/rockchip/clk-rk3399.c@@ -118,6 +118,10 @@ PNAME(mux_armclkb_p) = { "clk_core_b_lpll_src", "clk_core_b_bpll_src", "clk_core_b_dpll_src", "clk_core_b_gpll_src" }; +PNAME(mux_ddrclk_p) = { "clk_ddrc_lpll_src", + "clk_ddrc_bpll_src", + "clk_ddrc_dpll_src", + "clk_ddrc_gpll_src" }; PNAME(mux_aclk_cci_p) = { "cpll_aclk_cci_src", "gpll_aclk_cci_src", "npll_aclk_cci_src",
@@ -1377,6 +1381,18 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { COMPOSITE_NOMUX(0, "clk_test", "clk_test_pre", CLK_IGNORE_UNUSED, RK3368_CLKSEL_CON(58), 0, 5, DFLAGS, RK3368_CLKGATE_CON(13), 11, GFLAGS), + + /* ddrc */ + GATE(0, "clk_ddrc_lpll_src", "lpll", CLK_IGNORE_UNUSED, + RK3399_CLKGATE_CON(3), 0, GFLAGS), + GATE(0, "clk_ddrc_bpll_src", "bpll", CLK_IGNORE_UNUSED, + RK3399_CLKGATE_CON(3), 1, GFLAGS), + GATE(0, "clk_ddrc_dpll_src", "dpll", CLK_IGNORE_UNUSED, + RK3399_CLKGATE_CON(3), 2, GFLAGS), + GATE(0, "clk_ddrc_gpll_src", "gpll", CLK_IGNORE_UNUSED, + RK3399_CLKGATE_CON(3), 3, GFLAGS), + COMPOSITE_DDRC(SCLK_DDRCLK, "clk_ddrc", mux_ddrclk_p, CLK_IGNORE_UNUSED, + RK3399_CLKSEL_CON(6), 4, 2, MFLAGS, 0, 3, DFLAGS), }; static struct rockchip_clk_branch rk3399_clk_pmu_branches[] __initdata = {
diff --git a/include/dt-bindings/clock/rk3399-cru.h b/include/dt-bindings/clock/rk3399-cru.h
index 50a44cf..8a0f0442 100644
--- a/include/dt-bindings/clock/rk3399-cru.h
+++ b/include/dt-bindings/clock/rk3399-cru.h@@ -131,6 +131,7 @@ #define SCLK_DPHY_RX0_CFG 165 #define SCLK_RMII_SRC 166 #define SCLK_PCIEPHY_REF100M 167 +#define SCLK_DDRCLK 168 #define DCLK_VOP0 180 #define DCLK_VOP1 181
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1.9.1