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49 lines
1.9 KiB
Diff
49 lines
1.9 KiB
Diff
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From e5dc1a4c01510da8438dddfdf4200b79d73990dc Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Wed, 9 Nov 2022 01:56:29 +0100
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Subject: [PATCH 4/6] clk: qcom: krait-cc: handle secondary mux sourcing out of
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acpu_aux
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Some bootloader may leave the system in an even more undefined state
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with the secondary mux of L2 or other cores sourcing out of the acpu_aux
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parent. This results in the clk set to the PXO rate or a PLL8 rate.
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The current logic to reset the mux and set them to a defined state only
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handle if the mux are configured to source out of QSB. Change this and
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force a new and defined state if the current clk is lower than the aux
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rate. This way we can handle any wrong configuration where the mux is
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sourcing out of QSB (rate 225MHz, currently set to a virtual rate of 1),
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PXO rate (rate 25MHz) or PLL8 (needs to be configured to run at 384Mhz).
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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Link: https://lore.kernel.org/r/20221109005631.3189-3-ansuelsmth@gmail.com
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---
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drivers/clk/qcom/krait-cc.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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--- a/drivers/clk/qcom/krait-cc.c
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+++ b/drivers/clk/qcom/krait-cc.c
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@@ -383,8 +383,8 @@ static int krait_cc_probe(struct platfor
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*/
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cur_rate = clk_get_rate(l2_pri_mux_clk);
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aux_rate = 384000000;
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- if (cur_rate == 1) {
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- pr_info("L2 @ QSB rate. Forcing new rate.\n");
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+ if (cur_rate < aux_rate) {
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+ pr_info("L2 @ Undefined rate. Forcing new rate.\n");
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cur_rate = aux_rate;
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}
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clk_set_rate(l2_pri_mux_clk, aux_rate);
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@@ -394,8 +394,8 @@ static int krait_cc_probe(struct platfor
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for_each_possible_cpu(cpu) {
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clk = clks[cpu];
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cur_rate = clk_get_rate(clk);
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- if (cur_rate == 1) {
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- pr_info("CPU%d @ QSB rate. Forcing new rate.\n", cpu);
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+ if (cur_rate < aux_rate) {
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+ pr_info("CPU%d @ Undefined rate. Forcing new rate.\n", cpu);
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cur_rate = aux_rate;
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}
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