mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
49 lines
1.9 KiB
Diff
49 lines
1.9 KiB
Diff
|
From e5dc1a4c01510da8438dddfdf4200b79d73990dc Mon Sep 17 00:00:00 2001
|
||
|
|
From: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Date: Wed, 9 Nov 2022 01:56:29 +0100
|
||
|
|
Subject: [PATCH 4/6] clk: qcom: krait-cc: handle secondary mux sourcing out of
|
||
|
|
acpu_aux
|
||
|
|
|
||
|
|
Some bootloader may leave the system in an even more undefined state
|
||
|
|
with the secondary mux of L2 or other cores sourcing out of the acpu_aux
|
||
|
|
parent. This results in the clk set to the PXO rate or a PLL8 rate.
|
||
|
|
|
||
|
|
The current logic to reset the mux and set them to a defined state only
|
||
|
|
handle if the mux are configured to source out of QSB. Change this and
|
||
|
|
force a new and defined state if the current clk is lower than the aux
|
||
|
|
rate. This way we can handle any wrong configuration where the mux is
|
||
|
|
sourcing out of QSB (rate 225MHz, currently set to a virtual rate of 1),
|
||
|
|
PXO rate (rate 25MHz) or PLL8 (needs to be configured to run at 384Mhz).
|
||
|
|
|
||
|
|
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
|
||
|
|
Link: https://lore.kernel.org/r/20221109005631.3189-3-ansuelsmth@gmail.com
|
||
|
|
---
|
||
|
|
drivers/clk/qcom/krait-cc.c | 8 ++++----
|
||
|
|
1 file changed, 4 insertions(+), 4 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/clk/qcom/krait-cc.c
|
||
|
|
+++ b/drivers/clk/qcom/krait-cc.c
|
||
|
|
@@ -383,8 +383,8 @@ static int krait_cc_probe(struct platfor
|
||
|
|
*/
|
||
|
|
cur_rate = clk_get_rate(l2_pri_mux_clk);
|
||
|
|
aux_rate = 384000000;
|
||
|
|
- if (cur_rate == 1) {
|
||
|
|
- pr_info("L2 @ QSB rate. Forcing new rate.\n");
|
||
|
|
+ if (cur_rate < aux_rate) {
|
||
|
|
+ pr_info("L2 @ Undefined rate. Forcing new rate.\n");
|
||
|
|
cur_rate = aux_rate;
|
||
|
|
}
|
||
|
|
clk_set_rate(l2_pri_mux_clk, aux_rate);
|
||
|
|
@@ -394,8 +394,8 @@ static int krait_cc_probe(struct platfor
|
||
|
|
for_each_possible_cpu(cpu) {
|
||
|
|
clk = clks[cpu];
|
||
|
|
cur_rate = clk_get_rate(clk);
|
||
|
|
- if (cur_rate == 1) {
|
||
|
|
- pr_info("CPU%d @ QSB rate. Forcing new rate.\n", cpu);
|
||
|
|
+ if (cur_rate < aux_rate) {
|
||
|
|
+ pr_info("CPU%d @ Undefined rate. Forcing new rate.\n", cpu);
|
||
|
|
cur_rate = aux_rate;
|
||
|
|
}
|
||
|
|
|