diff options
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.patch | 88 |
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); |