summaryrefslogtreecommitdiffstats
path: root/drivers/clk
diff options
context:
space:
mode:
authorAlain Volmat <avolmat@me.com>2021-12-18 22:11:57 +0100
committerStephen Boyd <sboyd@kernel.org>2022-01-05 17:21:28 -0800
commit810251b0d36af694ece65146112a2bb541f758fb (patch)
treeb2a905ea41487699dca5f7cd234cfe0f7f4f0335 /drivers/clk
parent3efe64ef5186c20c9ed4aeb771a7bc3225d0671b (diff)
downloadlinux-810251b0d36af694ece65146112a2bb541f758fb.tar.bz2
clk: st: clkgen-mux: search reg within node or parent
In order to avoid having duplicated addresses within the DT, only have one unit-address per clockgen and each driver within the clockgen should look at the parent node (overall clockgen) to figure out the reg property. Such behavior is already in place in other STi platform clock drivers such as clk-flexgen and clkgen-pll. Keep backward compatibility by first looking at reg within the node before looking into the parent node. Signed-off-by: Alain Volmat <avolmat@me.com> Link: https://lore.kernel.org/r/20211218211157.188214-3-avolmat@me.com Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/st/clkgen-mux.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/clk/st/clkgen-mux.c b/drivers/clk/st/clkgen-mux.c
index ce583ded968a..ee39af7a0b72 100644
--- a/drivers/clk/st/clkgen-mux.c
+++ b/drivers/clk/st/clkgen-mux.c
@@ -57,10 +57,17 @@ static void __init st_of_clkgen_mux_setup(struct device_node *np,
const char **parents;
int num_parents = 0;
+ /*
+ * First check for reg property within the node to keep backward
+ * compatibility, then if reg doesn't exist look at the parent node
+ */
reg = of_iomap(np, 0);
if (!reg) {
- pr_err("%s: Failed to get base address\n", __func__);
- return;
+ reg = of_iomap(of_get_parent(np), 0);
+ if (!reg) {
+ pr_err("%s: Failed to get base address\n", __func__);
+ return;
+ }
}
parents = clkgen_mux_get_parents(np, &num_parents);