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Message-Id: <2bf3ae9e8b48d86acc771656ed7eb6a0ee9613ea.1701768028.git.ysato@users.sourceforge.jp>
Date:   Tue,  5 Dec 2023 18:45:26 +0900
From:   Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:     linux-sh@...r.kernel.org
Cc:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Damien Le Moal <dlemoal@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rich Felker <dalias@...c.org>,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Lee Jones <lee@...nel.org>, Helge Deller <deller@....de>,
        Heiko Stuebner <heiko@...ech.de>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Chris Morgan <macromorgan@...mail.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>,
        David Rientjes <rientjes@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>, Baoquan He <bhe@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Guo Ren <guoren@...nel.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Azeem Shaikh <azeemshaikh38@...il.com>,
        Palmer Dabbelt <palmer@...osinc.com>,
        Bin Meng <bmeng@...ylab.org>,
        Max Filippov <jcmvbkbc@...il.com>, Tom Rix <trix@...hat.com>,
        Herve Codina <herve.codina@...tlin.com>,
        Jacky Huang <ychuang3@...oton.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Jonathan Corbet <corbet@....net>,
        Biju Das <biju.das.jz@...renesas.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Sam Ravnborg <sam@...nborg.org>,
        Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>,
        Sergey Shtylyov <s.shtylyov@....ru>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        linux-ide@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-pci@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-fbdev@...r.kernel.org
Subject: [DO NOT MERGE v5 07/37] sh: Fix COMMON_CLK support in CONFIG_OF=y.

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 <ysato@...rs.sourceforge.jp>
---
 arch/sh/boards/of-generic.c | 28 ++++------------------------
 arch/sh/kernel/time.c       | 12 ++++++++++++
 2 files changed, 16 insertions(+), 24 deletions(-)

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
-- 
2.39.2

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