lkml.org 
[lkml]   [2023]   [Jan]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH v2 09/11] clk: imx: cpu: add device tree support
Date
The patch, backwards compatible, extends the driver to initialize the
clock directly from the device tree.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

drivers/clk/imx/clk-cpu.c | 54 +++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)

diff --git a/drivers/clk/imx/clk-cpu.c b/drivers/clk/imx/clk-cpu.c
index cb6ca4cf0535..28fb75c6ecea 100644
--- a/drivers/clk/imx/clk-cpu.c
+++ b/drivers/clk/imx/clk-cpu.c
@@ -106,3 +106,57 @@ struct clk_hw *imx_clk_hw_cpu(const char *name, const char *parent_name,
return hw;
}
EXPORT_SYMBOL_GPL(imx_clk_hw_cpu);
+
+/**
+ * of_imx_cpu_clk_setup - Setup function for imx low power gate
+ * clock
+ * @node: device node for the clock
+ */
+static void __init of_imx_cpu_clk_setup(struct device_node *node)
+{
+ struct clk_hw *hw;
+ struct clk *parent_clk, *div, *mux, *pll, *step;
+ const char *name = node->name, *parent_name;
+
+ parent_clk = of_clk_get_by_name(node, "fck");
+ if (IS_ERR(parent_clk)) {
+ pr_err("failed to get parent clock for %pOFn\n", node);
+ return;
+ }
+
+ div = of_clk_get_by_name(node, "div-clk");
+ if (IS_ERR(div)) {
+ pr_err("failed to get div clock for %pOFn\n", node);
+ return;
+ }
+
+ mux = of_clk_get_by_name(node, "mux-clk");
+ if (IS_ERR(div)) {
+ pr_err("failed to get mux clock for %pOFn\n", node);
+ return;
+ }
+
+ pll = of_clk_get_by_name(node, "pll-clk");
+ if (IS_ERR(div)) {
+ pr_err("failed to get pll clock for %pOFn\n", node);
+ return;
+ }
+
+ step = of_clk_get_by_name(node, "step-clk");
+ if (IS_ERR(div)) {
+ pr_err("failed to get step clock for %pOFn\n", node);
+ return;
+ }
+
+ parent_name = __clk_get_name(parent_clk);
+ of_property_read_string(node, "clock-output-names", &name);
+
+ hw = imx_clk_hw_cpu(name, parent_name, div, mux, pll, step);
+ if (!IS_ERR(hw))
+ of_clk_add_hw_provider(node, of_clk_hw_simple_get, hw);
+
+ pr_debug("name: %s, parent: %s, div: %s, mux: %s, pll: %s, step: %s\n",
+ name, parent_name, __clk_get_name(div), __clk_get_name(mux),
+ __clk_get_name(pll), __clk_get_name(step));
+}
+CLK_OF_DECLARE(fsl_cpu_clk, "fsl,cpu-clock", of_imx_cpu_clk_setup);
--
2.32.0
\
 
 \ /
  Last update: 2023-03-26 23:24    [W:0.060 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site