This is a note to let you know that I've just added the patch titled
clk: qcom: apss-ipq6018: fix apcs_alias0_clk_src
to the 5.15-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-qcom-apss-ipq6018-fix-apcs_alias0_clk_src.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit da12f6c12a5451f31557ef3890da206b345074b7
Author: Robert Marko <robimarko@xxxxxxxxx>
Date: Fri Aug 19 00:06:21 2022 +0200
clk: qcom: apss-ipq6018: fix apcs_alias0_clk_src
[ Upstream commit 43a56cbf2a38170b02db29654607575b1b4b5bc0 ]
While working on IPQ8074 APSS driver it was discovered that IPQ6018 and
IPQ8074 use almost the same PLL and APSS clocks, however APSS driver is
currently broken.
More precisely apcs_alias0_clk_src is broken, it was added as regmap_mux
clock.
However after debugging why it was always stuck at 800Mhz, it was figured
out that its not regmap_mux compatible at all.
It is a simple mux but it uses RCG2 register layout and control bits, so
utilize the new clk_rcg2_mux_closest_ops to correctly drive it while not
having to provide a dummy frequency table.
While we are here, use ARRAY_SIZE for number of parents.
Tested on IPQ6018-CP01-C1 reference board and multiple IPQ8074 boards.
Fixes: 5e77b4ef1b19 ("clk: qcom: Add ipq6018 apss clock controller")
Signed-off-by: Robert Marko <robimarko@xxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220818220628.339366-2-robimarko@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/clk/qcom/apss-ipq6018.c b/drivers/clk/qcom/apss-ipq6018.c
index d78ff2f310bf..be952d417ded 100644
--- a/drivers/clk/qcom/apss-ipq6018.c
+++ b/drivers/clk/qcom/apss-ipq6018.c
@@ -16,7 +16,7 @@
#include "clk-regmap.h"
#include "clk-branch.h"
#include "clk-alpha-pll.h"
-#include "clk-regmap-mux.h"
+#include "clk-rcg.h"
enum {
P_XO,
@@ -33,16 +33,15 @@ static const struct parent_map parents_apcs_alias0_clk_src_map[] = {
{ P_APSS_PLL_EARLY, 5 },
};
-static struct clk_regmap_mux apcs_alias0_clk_src = {
- .reg = 0x0050,
- .width = 3,
- .shift = 7,
+static struct clk_rcg2 apcs_alias0_clk_src = {
+ .cmd_rcgr = 0x0050,
+ .hid_width = 5,
.parent_map = parents_apcs_alias0_clk_src_map,
.clkr.hw.init = &(struct clk_init_data){
.name = "apcs_alias0_clk_src",
.parent_data = parents_apcs_alias0_clk_src,
- .num_parents = 2,
- .ops = &clk_regmap_mux_closest_ops,
+ .num_parents = ARRAY_SIZE(parents_apcs_alias0_clk_src),
+ .ops = &clk_rcg2_mux_closest_ops,
.flags = CLK_SET_RATE_PARENT,
},
};
