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authorChristian Marangi <ansuelsmth@gmail.com>2023-01-10 20:10:28 +0100
committerChristian Marangi <ansuelsmth@gmail.com>2023-01-10 20:59:21 +0100
commit55c32a6ce385576875fa0dc2c0866196eef451e3 (patch)
treeea21f9ffa55bd9ae5996b957e2dceee761af7522 /target/linux/ipq806x/patches-5.15/122-04-clk-qcom-krait-cc-rework-mux-reset-logic-and-reset-h.patch
parent7af1713a29441c47330f9dd1b1f1c9772af5e033 (diff)
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ipq806x: refresh upstreamed patch with kernel version tag
Refresh upstreamed patch with kernel version tag and replace them with the upstream version. For krait-cc patch rework them with the upstream changes. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Diffstat (limited to 'target/linux/ipq806x/patches-5.15/122-04-clk-qcom-krait-cc-rework-mux-reset-logic-and-reset-h.patch')
-rw-r--r--target/linux/ipq806x/patches-5.15/122-04-clk-qcom-krait-cc-rework-mux-reset-logic-and-reset-h.patch88
1 files changed, 88 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.15/122-04-clk-qcom-krait-cc-rework-mux-reset-logic-and-reset-h.patch b/target/linux/ipq806x/patches-5.15/122-04-clk-qcom-krait-cc-rework-mux-reset-logic-and-reset-h.patch
new file mode 100644
index 0000000000..8f88e06991
--- /dev/null
+++ b/target/linux/ipq806x/patches-5.15/122-04-clk-qcom-krait-cc-rework-mux-reset-logic-and-reset-h.patch
@@ -0,0 +1,88 @@
+From 6a77cf3f5f95ec0058e1b4d1ada018748cb0b83b Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Thu, 15 Sep 2022 03:33:13 +0200
+Subject: [PATCH 9/9] clk: qcom: krait-cc: rework mux reset logic and reset
+ hfpll
+
+Rework and clean mux reset logic.
+Compact it to a for loop to handle both CPU and L2 in one place.
+Move hardcoded aux_rate to define and add a new hfpll_rate value to
+reset hfpll settings.
+Change logic to now reset the hfpll to the lowest value of 600 Mhz and
+then restoring the previous frequency. This permits to reset the hfpll if
+the primary mux was set to source out of the secondary mux.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+---
+ drivers/clk/qcom/krait-cc.c | 50 +++++++++++++++++--------------------
+ 1 file changed, 23 insertions(+), 27 deletions(-)
+
+--- a/drivers/clk/qcom/krait-cc.c
++++ b/drivers/clk/qcom/krait-cc.c
+@@ -25,7 +25,9 @@ enum {
+ clks_max,
+ };
+
+-#define QSB_RATE 2250000000
++#define QSB_RATE 225000000
++#define AUX_RATE 384000000
++#define HFPLL_RATE 600000000
+
+ static unsigned int sec_mux_map[] = {
+ 2,
+@@ -350,7 +352,7 @@ static int krait_cc_probe(struct platfor
+ {
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *id;
+- unsigned long cur_rate, aux_rate, qsb_rate;
++ unsigned long cur_rate, qsb_rate;
+ int cpu;
+ struct clk_hw *mux, *l2_pri_mux;
+ struct clk *clk, **clks;
+@@ -420,28 +422,29 @@ static int krait_cc_probe(struct platfor
+ * two different rates to force a HFPLL reinit under all
+ * circumstances.
+ */
+- cur_rate = clk_get_rate(clks[l2_mux]);
+- aux_rate = 384000000;
+- if (cur_rate < aux_rate) {
+- dev_info(dev, "L2 @ Undefined rate. Forcing new rate.\n");
+- cur_rate = aux_rate;
+- }
+- clk_set_rate(clks[l2_mux], aux_rate);
+- clk_set_rate(clks[l2_mux], 2);
+- clk_set_rate(clks[l2_mux], cur_rate);
+- dev_info(dev, "L2 @ %lu KHz\n", clk_get_rate(clks[l2_mux]) / 1000);
+- for_each_possible_cpu(cpu) {
++ for (cpu = 0; cpu < 5; cpu++) {
++ const char *l2_s = "L2";
++ char cpu_s[5];
++
+ clk = clks[cpu];
++ if (!clk)
++ continue;
++
++ if (cpu < 4)
++ snprintf(cpu_s, 5, "CPU%d", cpu);
++
+ cur_rate = clk_get_rate(clk);
+- if (cur_rate < aux_rate) {
+- dev_info(dev, "CPU%d @ Undefined rate. Forcing new rate.\n", cpu);
+- cur_rate = aux_rate;
++ if (cur_rate < AUX_RATE) {
++ dev_info(dev, "%s @ Undefined rate. Forcing new rate.\n",
++ cpu < 4 ? cpu_s : l2_s);
++ cur_rate = AUX_RATE;
+ }
+
+- clk_set_rate(clk, aux_rate);
+- clk_set_rate(clk, 2);
++ clk_set_rate(clk, AUX_RATE);
++ clk_set_rate(clk, HFPLL_RATE);
+ clk_set_rate(clk, cur_rate);
+- dev_info(dev, "CPU%d @ %lu KHz\n", cpu, clk_get_rate(clk) / 1000);
++ dev_info(dev, "%s @ %lu KHz\n", cpu < 4 ? cpu_s : l2_s,
++ clk_get_rate(clk) / 1000);
+ }
+
+ of_clk_add_provider(dev->of_node, krait_of_get, clks);