diff options
Diffstat (limited to 'target/linux/ipq807x/patches-5.15/0038-v6.1-clk-qcom-clk-rcg2-add-rcg2-mux-ops.patch')
| -rw-r--r-- | target/linux/ipq807x/patches-5.15/0038-v6.1-clk-qcom-clk-rcg2-add-rcg2-mux-ops.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/target/linux/ipq807x/patches-5.15/0038-v6.1-clk-qcom-clk-rcg2-add-rcg2-mux-ops.patch b/target/linux/ipq807x/patches-5.15/0038-v6.1-clk-qcom-clk-rcg2-add-rcg2-mux-ops.patch new file mode 100644 index 0000000000..451066099d --- /dev/null +++ b/target/linux/ipq807x/patches-5.15/0038-v6.1-clk-qcom-clk-rcg2-add-rcg2-mux-ops.patch @@ -0,0 +1,51 @@ +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 +@@ -477,6 +477,13 @@ 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; |