From: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Date: Mon, 31 Mar 2014 02:52:51 +0000 (+0900)
Subject: arm: rmobile: koelsch: Change to maximum CPU frequency
X-Git-Tag: v2014.07-rc2~9^2~2^2~3
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=ccde6771dca4e792018392931d3c30b10ce137b1;p=u-boot

arm: rmobile: koelsch: Change to maximum CPU frequency

Maximum CPU clock of R8A7791 that are used in koelsch board is 1.5GHz.
This change to use the maximum clock in this board.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---

diff --git a/board/renesas/koelsch/koelsch.c b/board/renesas/koelsch/koelsch.c
index d4f63724b4..bfd0cc6884 100644
--- a/board/renesas/koelsch/koelsch.c
+++ b/board/renesas/koelsch/koelsch.c
@@ -19,19 +19,26 @@
 #include <netdev.h>
 #include <miiphy.h>
 #include <i2c.h>
+#include <div64.h>
 #include "qos.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define CLK2MHZ(clk)	(clk / 1000 / 1000)
 void s_init(void)
 {
 	struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
 	struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
+	u32 stc;
 
 	/* Watchdog init */
 	writel(0xA5A5A500, &rwdt->rwtcsra);
 	writel(0xA5A5A500, &swdt->swtcsra);
 
+	/* CPU frequency setting. Set to 1.5GHz */
+	stc = ((1500 / CLK2MHZ(CONFIG_SYS_CLK_FREQ)) - 1) << PLL0_STC_BIT;
+	clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc);
+
 	/* QoS */
 	qos_init();
 }