[PATCH meson-clk-next] clk: meson: meson8b: enable CLK_MESON_MPLL_ROUND_CLOSEST for all MPLLs

[Martin Blumenstingl]

Until recently the clk-mpll implementation always used
DIV_ROUND_UP_ULL(). However, since commit 1b0e500dc606e9 ("clk: meson:
mpll: add round closest support") the default was changed to round down
the SDM divisor.
This broke RGMII Ethernet on Meson8b (which uses MPLL2 as RGMII TX
clock). With the old implementation the MPLL2 output was 249999701Hz,
but with "round closest" disabled the output is 212500000Hz.

Enabling CLK_MESON_MPLL_ROUND_CLOSEST for all MPLL2 clocks on Meson8b
fixes this because we now get the same 249999701Hz from MPLL2 as before.

Fixes: 1b0e500dc606e9 ("clk: meson: mpll: add round closest support")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com>
---
 drivers/clk/meson/meson8b.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index d0524ec71aad..2639a892a5d4 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -382,6 +382,7 @@ static struct clk_regmap meson8b_mpll0_div = {
 			.width   = 1,
 		},
 		.lock = &meson_clk_lock,
+		.flags = CLK_MESON_MPLL_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "mpll0_div",
@@ -423,6 +424,7 @@ static struct clk_regmap meson8b_mpll1_div = {
 			.width   = 9,
 		},
 		.lock = &meson_clk_lock,
+		.flags = CLK_MESON_MPLL_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "mpll1_div",
@@ -464,6 +466,7 @@ static struct clk_regmap meson8b_mpll2_div = {
 			.width   = 9,
 		},
 		.lock = &meson_clk_lock,
+		.flags = CLK_MESON_MPLL_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "mpll2_div",
-- 
2.17.0