[PATCH v13 6/8] clk: qcom: cpu-8996: Add support to switch to alternate PLL
From: sboyd@kernel.org (Stephen Boyd)
Date: 2018-10-17 15:32:08
Also in:
linux-arm-msm, linux-clk, linux-devicetree, lkml
Quoting ilia.lin at gmail.com (2018-06-14 14:53:53)
quoted hunk ↗ jump to hunk
@@ -227,6 +232,26 @@ clk_cpu_8996_mux_determine_rate(struct clk_hw *hw, struct clk_rate_request *req) return 0; } +int cpu_clk_notifier_cb(struct notifier_block *nb, unsigned long event,
static? And name it something like clk_cpu_8996_notifier?
+ void *data)
+{
+ int ret;
+ struct clk_cpu_8996_mux *cpuclk = to_clk_cpu_8996_mux_nb(nb);
+
+ switch (event) {
+ case PRE_RATE_CHANGE:
+ ret = clk_cpu_8996_mux_set_parent(&cpuclk->clkr.hw, ALT_INDEX);
+ break;
+ case POST_RATE_CHANGE:
+ ret = clk_cpu_8996_mux_set_parent(&cpuclk->clkr.hw, PLL_INDEX);
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return notifier_from_errno(ret);
+};