openwrt/target/linux/ipq807x/patches-5.15/0038-v6.1-clk-qcom-clk-rcg2-add-rcg2-mux-ops.patch
John Audia 95ebd609ae kernel: bump 5.15 to 5.15.139
Changelog: https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.139

Removed upstreamed:
	x86/patches-5.15/120-hwrng-geode-fix-accessing-registers.patch[3]

All other patches automatically rebased.

3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.139&id=a5c83c8043d70b9a28d1bd78a2dbbab340f43889

Build system: x86_64
Build-tested: ramips/tplink_archer-a6-v3
Run-tested: ramips/tplink_archer-a6-v3

Signed-off-by: John Audia <therealgraysky@proton.me>
[Refresh on top of OpenWrt 23.05]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit df167450a5)
2023-11-25 20:17:09 +01:00

52 lines
1.8 KiB
Diff

From f7fb35d540240889a8f45f3fd42363cbc1a448e2 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 19 Aug 2022 00:06:20 +0200
Subject: [PATCH] clk: qcom: clk-rcg2: add rcg2 mux ops
An RCG may act as a mux that switch between 2 parents.
This is the case on IPQ6018 and IPQ8074 where the APCS core clk that feeds
the CPU cluster clock just switches between XO and the PLL that feeds it.
Add the required ops to add support for this special configuration and use
the generic mux function to determine the rate.
This way we dont have to keep a essentially dummy frequency table to use
RCG2 as a mux.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220818220628.339366-1-robimarko@gmail.com
---
drivers/clk/qcom/clk-rcg.h | 1 +
drivers/clk/qcom/clk-rcg2.c | 7 +++++++
2 files changed, 8 insertions(+)
--- a/drivers/clk/qcom/clk-rcg.h
+++ b/drivers/clk/qcom/clk-rcg.h
@@ -164,6 +164,7 @@ struct clk_rcg2_gfx3d {
extern const struct clk_ops clk_rcg2_ops;
extern const struct clk_ops clk_rcg2_floor_ops;
+extern const struct clk_ops clk_rcg2_mux_closest_ops;
extern const struct clk_ops clk_edp_pixel_ops;
extern const struct clk_ops clk_byte_ops;
extern const struct clk_ops clk_byte2_ops;
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -471,6 +471,13 @@ const struct clk_ops clk_rcg2_floor_ops
};
EXPORT_SYMBOL_GPL(clk_rcg2_floor_ops);
+const struct clk_ops clk_rcg2_mux_closest_ops = {
+ .determine_rate = __clk_mux_determine_rate_closest,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+};
+EXPORT_SYMBOL_GPL(clk_rcg2_mux_closest_ops);
+
struct frac_entry {
int num;
int den;