[v7,07/37] sh: Fix COMMON_CLK support in CONFIG_OF=y.

Commit Message

Yoshinori Sato April 4, 2024, 4:59 a.m. UTC

Initialize the clock and timer using the COMMON_CLK procedure.
sh's earlytimer mechanism doesn't work properly in OF,
so timer initialization is delayed.
If CONFIG_OF=y, perform the general timer initialization procedure.

Signed-off-by: Yoshinori Sato <[e-mail]>
---
 arch/sh/boards/of-generic.c | 28 ++++------------------------
 arch/sh/kernel/time.c       | 12 ++++++++++++
 2 files changed, 16 insertions(+), 24 deletions(-)

Patch

diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
index f7f3e618e85b..f1ca5a914c11 100644
--- a/arch/sh/boards/of-generic.c
+++ b/arch/sh/boards/of-generic.c
@@ -8,6 +8,7 @@ 
 #include <linux/of.h>
 #include <linux/of_clk.h>
 #include <linux/of_fdt.h>
+#include <linux/of_platform.h>
 #include <linux/clocksource.h>
 #include <linux/irqchip.h>
 #include <asm/machvec.h>
@@ -98,16 +99,7 @@  static void sh_of_smp_probe(void)
 
 #endif
 
-static void noop(void)
-{
-}
-
-static int noopi(void)
-{
-	return 0;
-}
-
-static void __init sh_of_mem_reserve(void)
+static void __init sh_of_mem_init(void)
 {
 	early_init_fdt_reserve_self();
 	early_init_fdt_scan_reserved_mem();
@@ -140,25 +132,13 @@  static void __init sh_of_init_irq(void)
 	irqchip_init();
 }
 
-static int __init sh_of_clk_init(void)
-{
-#ifdef CONFIG_COMMON_CLK
-	/* Disabled pending move to COMMON_CLK framework. */
-	pr_info("SH generic board support: scanning for clk providers\n");
-	of_clk_init(NULL);
-#endif
-	return 0;
-}
-
 static struct sh_machine_vector __initmv sh_of_generic_mv = {
 	.mv_setup	= sh_of_setup,
 	.mv_name	= "devicetree", /* replaced by DT root's model */
 	.mv_irq_demux	= sh_of_irq_demux,
 	.mv_init_irq	= sh_of_init_irq,
-	.mv_clk_init	= sh_of_clk_init,
-	.mv_mode_pins	= noopi,
-	.mv_mem_init	= noop,
-	.mv_mem_reserve	= sh_of_mem_reserve,
+	.mv_mode_pins	= generic_mode_pins,
+	.mv_mem_init	= sh_of_mem_init,
 };
 
 struct sh_clk_ops;
diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
index 821a09cbd605..ce5b7c2f8628 100644
--- a/arch/sh/kernel/time.c
+++ b/arch/sh/kernel/time.c
@@ -19,7 +19,9 @@ 
 #include <asm/clock.h>
 #include <asm/rtc.h>
 #include <asm/platform_early.h>
+#include <linux/of_clk.h>
 
+#ifndef CONFIG_SH_DEVICE_TREE
 static void __init sh_late_time_init(void)
 {
 	/*
@@ -43,3 +45,13 @@  void __init time_init(void)
 
 	late_time_init = sh_late_time_init;
 }
+#else
+/* CONFIG_SH_DEVICE_TREE */
+void __init time_init(void)
+{
+	pr_info("SH generic board support: scanning for clk providers\n");
+
+	of_clk_init(NULL);
+	timer_probe();
+}
+#endif