linux-kernel - [PATCH v2 03/17] sh: set preset

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Message-Id: <1465714475-24111-4-git-send-email-ysato@users.sourceforge.jp>
Date:	Sun, 12 Jun 2016 15:54:21 +0900
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
Subject: [PATCH v2 03/17] sh: set preset_lpj

Generic callibrate delay required this value.

Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
---
 arch/sh/boards/of-generic.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
index d24bc02..e2b4d98 100644
--- a/arch/sh/boards/of-generic.c
+++ b/arch/sh/boards/of-generic.c
@@ -128,6 +128,8 @@ static void __init sh_of_time_init(void)
 static void __init sh_of_setup(char **cmdline_p)
 {
 	struct device_node *root;
+	struct device_node *cpu;
+	u32 freq;
 
 	board_time_init = sh_of_time_init;
 
@@ -139,6 +141,10 @@ static void __init sh_of_setup(char **cmdline_p)
 	}
 
 	sh_of_smp_probe();
+
+	cpu = of_find_node_by_name(NULL, "cpu");
+	if (!of_property_read_u32(cpu, "clock-frequency", &freq))
+		preset_lpj = freq / CONFIG_HZ / 2;
 }
 
 static int sh_of_irq_demux(int irq)
-- 
2.7.0