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From 02b008bc50c79aeaa666917bcd2a58049d1ab68c Mon Sep 17 00:00:00 2001
From: Koen Kooi <koen@dominion.thruhere.net>
Date: Thu, 6 Jan 2011 13:32:19 +0100
Subject: [PATCH 4/4] OMAP3: Overo Tide: enable upto 720MHz OPP
Overo Tide uses a recent 3530 and the board design allows enabling 720MHz
OPP. tweak the default table to allow for higher OPP tables
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
---
arch/arm/mach-omap2/board-overo.c | 51 +++++++++++++++++++++++++++++++++++++
1 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 8686015..2fa0c96 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -29,6 +29,7 @@
#include <linux/i2c/twl.h>
#include <linux/regulator/machine.h>
#include <linux/spi/spi.h>
+#include <linux/opp.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
@@ -52,10 +53,12 @@
#include <plat/mcspi.h>
#include <plat/mux.h>
#include <plat/usb.h>
+#include <plat/omap_device.h>
#include "mux.h"
#include "sdram-micron-mt46h32m32lf-6.h"
#include "hsmmc.h"
+#include "pm.h"
#define OVERO_GPIO_BT_XGATE 15
#define OVERO_GPIO_W2W_NRESET 16
@@ -788,6 +791,53 @@ static void __init usrp1_e_init(void)
}
+static void __init overo_opp_init(void)
+{
+ int r = 0;
+
+ /* Initialize the omap3 opp table */
+ if (omap3_opp_init()) {
+ pr_err("%s: opp default init failed\n", __func__);
+ return;
+ }
+
+ /* Custom OPP enabled for Tide */
+ if (omap3_has_720mhz()) {
+ struct omap_hwmod *mh = omap_hwmod_lookup("mpu");
+ struct omap_hwmod *dh = omap_hwmod_lookup("iva");
+ struct device *dev;
+
+ if (!mh || !dh) {
+ pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
+ __func__, mh, dh);
+ r = -EINVAL;
+ } else {
+ /* Enable MPU 720MHz */
+ dev = &mh->od->pdev.dev;
+ r = opp_enable(dev, 720000000);
+
+ /* Enable IVA 520MHz and lower opps */
+ dev = &dh->od->pdev.dev;
+ r |= opp_enable(dev, 520000000);
+ }
+ if (r) {
+ pr_err("%s: failed to enable higher opp %d\n",
+ __func__, r);
+ /*
+ * Cleanup - disable the higher freqs - we dont care
+ * about the results
+ */
+ dev = &mh->od->pdev.dev;
+ opp_disable(dev, 720000000);
+ dev = &dh->od->pdev.dev;
+ opp_disable(dev, 520000000);
+ } else {
+ pr_err("%s: 720MHz MPU OPPs enabled!\n", __func__);
+ }
+ }
+
+}
+
static void __init overo_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
@@ -846,6 +896,7 @@ static void __init overo_init(void)
else
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_USBH_CPEN\n");
+ overo_opp_init();
}
MACHINE_START(OVERO, "Gumstix Overo")
--
1.6.6.1
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