This is a note to let you know that I've just added the patch titled
clk: rockchip: rk3288: add CLK_SET_RATE_PARENT to sclk_mac
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
clk-rockchip-rk3288-add-clk_set_rate_parent-to-sclk_mac.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4791eb61dbe8100ccac59fecfac9d93a15db1447 Mon Sep 17 00:00:00 2001
From: Heiko Stuebner <heiko@xxxxxxxxx>
Date: Thu, 18 Jun 2015 16:18:28 +0200
Subject: clk: rockchip: rk3288: add CLK_SET_RATE_PARENT to sclk_mac
From: Heiko Stuebner <heiko@xxxxxxxxx>
commit 4791eb61dbe8100ccac59fecfac9d93a15db1447 upstream.
The dwmac ethernet controller on the rk3288 supports phys connected
via rgmii and rmii. With rgmii phys it is expected that the mac clock
is provided externally while with rmii phys the clock can be external
but also generated from the plls. In the later case it of course needs
be at 50MHz, which gets set from the dwmac_rk driver.
As most devices use a rgmii phy it never surfaced so far that the mac
clk mux, doesn't go up one lever to the pll clock in the rmii case with
internal clock generation, as it is missing the CLK_SET_RATE_PARENT flag,
and thus will not set the correct frequency in most cases.
Fixes: b9e4ba541607 ("clk: rockchip: add clock controller for rk3288")
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/clk/rockchip/clk-rk3288.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/clk/rockchip/clk-rk3288.c
+++ b/drivers/clk/rockchip/clk-rk3288.c
@@ -578,7 +578,7 @@ static struct rockchip_clk_branch rk3288
COMPOSITE(0, "mac_pll_src", mux_pll_src_npll_cpll_gpll_p, 0,
RK3288_CLKSEL_CON(21), 0, 2, MFLAGS, 8, 5, DFLAGS,
RK3288_CLKGATE_CON(2), 5, GFLAGS),
- MUX(SCLK_MAC, "mac_clk", mux_mac_p, 0,
+ MUX(SCLK_MAC, "mac_clk", mux_mac_p, CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(21), 4, 1, MFLAGS),
GATE(SCLK_MACREF_OUT, "sclk_macref_out", "mac_clk", 0,
RK3288_CLKGATE_CON(5), 3, GFLAGS),
Patches currently in stable-queue which might be from heiko@xxxxxxxxx are
queue-4.1/clk-rockchip-rk3288-add-clk_set_rate_parent-to-sclk_mac.patch
--
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