From 6b0c26fa05470b939be05ecf534566aef0f5a2b2 Mon Sep 17 00:00:00 2001 From: Alexander Kochetkov Date: Mon, 26 Feb 2018 14:27:38 +0300 Subject: [PATCH] rockchip: clk: rk3188: update dpll settings to make EMAC work The patch set dpll settings for 300MHz to values used by binary blob[1]. With new values dpll still generate 300MHz clock, but EMAC work. Probably with new values dpll generate more stable clock. dpll on rk3188 provide clocks to DDR and EMAC. With current dpll settings EMAC doesn't work on radxa rock. EMAC sends packets to network, but it doesn't receive anything. ifconfig shows a lot of framing errors. [1] https://github.com/linux-rockchip/u-boot-rockchip/blob/u-boot-rk3288/ tools/rk_tools/3188_LPDDR2_300MHz_DDR3_300MHz_20130830.bin Signed-off-by: Alexander Kochetkov Acked-by: Philipp Tomsich Reviewed-by: Philipp Tomsich --- drivers/clk/rockchip/clk_rk3188.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/rockchip/clk_rk3188.c b/drivers/clk/rockchip/clk_rk3188.c index ad8df5a459..cfe6abe470 100644 --- a/drivers/clk/rockchip/clk_rk3188.c +++ b/drivers/clk/rockchip/clk_rk3188.c @@ -123,7 +123,7 @@ static int rkclk_configure_ddr(struct rk3188_cru *cru, struct rk3188_grf *grf, unsigned int hz, bool has_bwadj) { static const struct pll_div dpll_cfg[] = { - {.nf = 25, .nr = 2, .no = 1}, + {.nf = 75, .nr = 1, .no = 6}, {.nf = 400, .nr = 9, .no = 2}, {.nf = 500, .nr = 9, .no = 2}, {.nf = 100, .nr = 3, .no = 1}, -- 2.39.5