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raw | patch | inline | side by side (parent: 81b48e4)
author | Koen Kooi <koen@dominion.thruhere.net> | |
Sat, 23 Jul 2011 08:41:13 +0000 (10:41 +0200) | ||
committer | Koen Kooi <koen@dominion.thruhere.net> | |
Sat, 23 Jul 2011 08:41:13 +0000 (10:41 +0200) |
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
recipes-kernel/linux/linux-3.0/beagle/0005-omap3-Add-basic-support-for-720MHz-part.patch | [new file with mode: 0644] | patch | blob |
recipes-kernel/linux/linux_3.0.bb | patch | blob | history |
diff --git a/recipes-kernel/linux/linux-3.0/beagle/0005-omap3-Add-basic-support-for-720MHz-part.patch b/recipes-kernel/linux/linux-3.0/beagle/0005-omap3-Add-basic-support-for-720MHz-part.patch
--- /dev/null
@@ -0,0 +1,202 @@
+From ec1da82b1bd9446e75e6d176bbe4b75f03d4da18 Mon Sep 17 00:00:00 2001
+From: Sanjeev Premi <premi@ti.com>
+Date: Tue, 18 Jan 2011 13:19:55 +0530
+Subject: [PATCH 5/5] omap3: Add basic support for 720MHz part
+
+This patch adds support for new speed enhanced parts with ARM
+and IVA running at 720MHz and 520MHz respectively. These parts
+can be probed at run-time by reading PRODID.SKUID[3:0] at
+0x4830A20C [1].
+
+This patch specifically does following:
+ * Detect devices capable of 720MHz.
+ * Add new OPP
+ * Ensure that OPP is conditionally enabled.
+ * Check for presence of IVA before attempting to enable
+ the corresponding OPP.
+
+ [1] http://focus.ti.com/lit/ug/spruff1d/spruff1d.pdf
+
+Signed-off-by: Sanjeev Premi <premi@ti.com>
+---
+ arch/arm/mach-omap2/control.h | 7 ++++
+ arch/arm/mach-omap2/id.c | 10 +++++
+ arch/arm/mach-omap2/opp3xxx_data.c | 63 ++++++++++++++++++++++++++++++++-
+ arch/arm/plat-omap/include/plat/cpu.h | 2 +
+ 4 files changed, 81 insertions(+), 1 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
+index a016c8b..69d0b9c 100644
+--- a/arch/arm/mach-omap2/control.h
++++ b/arch/arm/mach-omap2/control.h
+@@ -371,6 +371,13 @@
+ #define FEAT_NEON 0
+ #define FEAT_NEON_NONE 1
+
++/*
++ * Product ID register
++ */
++#define OMAP3_PRODID 0x020C
++
++#define OMAP3_SKUID_MASK 0x0f
++#define OMAP3_SKUID_720MHZ 0x08
+
+ #ifndef __ASSEMBLY__
+ #ifdef CONFIG_ARCH_OMAP2PLUS
+diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
+index 2537090..b6ed78a 100644
+--- a/arch/arm/mach-omap2/id.c
++++ b/arch/arm/mach-omap2/id.c
+@@ -210,6 +210,15 @@ static void __init omap3_check_features(void)
+ * TODO: Get additional info (where applicable)
+ * e.g. Size of L2 cache.
+ */
++
++ /*
++ * Does it support 720MHz?
++ */
++ status = (OMAP3_SKUID_MASK & read_tap_reg(OMAP3_PRODID));
++
++ if (status & OMAP3_SKUID_720MHZ) {
++ omap3_features |= OMAP3_HAS_720MHZ;
++ }
+ }
+
+ static void __init ti816x_check_features(void)
+@@ -490,6 +499,7 @@ static void __init omap3_cpuinfo(void)
+ OMAP3_SHOW_FEATURE(neon);
+ OMAP3_SHOW_FEATURE(isp);
+ OMAP3_SHOW_FEATURE(192mhz_clk);
++ OMAP3_SHOW_FEATURE(720mhz);
+
+ printk(")\n");
+ }
+diff --git a/arch/arm/mach-omap2/opp3xxx_data.c b/arch/arm/mach-omap2/opp3xxx_data.c
+index 12fc2da..6906992 100644
+--- a/arch/arm/mach-omap2/opp3xxx_data.c
++++ b/arch/arm/mach-omap2/opp3xxx_data.c
+@@ -18,8 +18,10 @@
+ * GNU General Public License for more details.
+ */
+ #include <linux/module.h>
++#include <linux/opp.h>
+
+ #include <plat/cpu.h>
++#include <plat/omap_device.h>
+
+ #include "control.h"
+ #include "omap_opp_data.h"
+@@ -99,6 +101,8 @@ static struct omap_opp_def __initdata omap34xx_opp_def_list[] = {
+ OPP_INITIALIZER("mpu", true, 550000000, OMAP3430_VDD_MPU_OPP4_UV),
+ /* MPU OPP5 */
+ OPP_INITIALIZER("mpu", true, 600000000, OMAP3430_VDD_MPU_OPP5_UV),
++ /* MPU OPP6 */
++ OPP_INITIALIZER("mpu", false, 720000000, 1350000),
+
+ /*
+ * L3 OPP1 - 41.5 MHz is disabled because: The voltage for that OPP is
+@@ -124,6 +128,8 @@ static struct omap_opp_def __initdata omap34xx_opp_def_list[] = {
+ OPP_INITIALIZER("iva", true, 400000000, OMAP3430_VDD_MPU_OPP4_UV),
+ /* DSP OPP5 */
+ OPP_INITIALIZER("iva", true, 430000000, OMAP3430_VDD_MPU_OPP5_UV),
++ /* DSP OPP6 */
++ OPP_INITIALIZER("iva", false, 520000000, 1350000),
+ };
+
+ static struct omap_opp_def __initdata omap36xx_opp_def_list[] = {
+@@ -151,6 +157,57 @@ static struct omap_opp_def __initdata omap36xx_opp_def_list[] = {
+ OPP_INITIALIZER("iva", false, 800000000, OMAP3630_VDD_MPU_OPP1G_UV),
+ };
+
++
++/**
++ * omap3_opp_enable_720Mhz() - Enable the OPP corresponding to 720MHz
++ *
++ * This function would be executed only if the silicon is capable of
++ * running at the 720MHz.
++ */
++static int __init omap3_opp_enable_720Mhz(void)
++{
++ int r = -ENODEV;
++ struct omap_hwmod *oh_mpu = omap_hwmod_lookup("mpu");
++ struct omap_hwmod *oh_iva;
++ struct platform_device *pdev;
++
++ if (!oh_mpu || !oh_mpu->od) {
++ goto err;
++ } else {
++ pdev = &oh_mpu->od->pdev;
++
++ r = opp_enable(&pdev->dev, 720000000);
++ if (r < 0) {
++ dev_err(&pdev->dev,
++ "opp_enable() failed for mpu@720MHz");
++ goto err;
++ }
++ }
++
++ if (omap3_has_iva()) {
++ oh_iva = omap_hwmod_lookup("iva");
++
++ if (!oh_iva || !oh_iva->od) {
++ r = -ENODEV;
++ goto err;
++ } else {
++ pdev = &oh_iva->od->pdev;
++
++ r = opp_enable(&pdev->dev, 520000000);
++ if (r < 0) {
++ dev_err(&pdev->dev,
++ "opp_enable() failed for iva@520MHz");
++ goto err;
++ }
++ }
++ }
++
++ dev_info(&pdev->dev, "Enabled OPP corresponding to 720MHz\n");
++
++err:
++ return r;
++}
++
+ /**
+ * omap3_opp_init() - initialize omap3 opp table
+ */
+@@ -164,10 +221,14 @@ int __init omap3_opp_init(void)
+ if (cpu_is_omap3630())
+ r = omap_init_opp_table(omap36xx_opp_def_list,
+ ARRAY_SIZE(omap36xx_opp_def_list));
+- else
++ else {
+ r = omap_init_opp_table(omap34xx_opp_def_list,
+ ARRAY_SIZE(omap34xx_opp_def_list));
+
++ if (omap3_has_720mhz())
++ r = omap3_opp_enable_720Mhz();
++ }
++
+ return r;
+ }
+ device_initcall(omap3_opp_init);
+diff --git a/arch/arm/plat-omap/include/plat/cpu.h b/arch/arm/plat-omap/include/plat/cpu.h
+index 8198bb6..5204c1e 100644
+--- a/arch/arm/plat-omap/include/plat/cpu.h
++++ b/arch/arm/plat-omap/include/plat/cpu.h
+@@ -478,6 +478,7 @@ extern u32 omap3_features;
+ #define OMAP3_HAS_192MHZ_CLK BIT(5)
+ #define OMAP3_HAS_IO_WAKEUP BIT(6)
+ #define OMAP3_HAS_SDRC BIT(7)
++#define OMAP3_HAS_720MHZ BIT(8)
+
+ #define OMAP3_HAS_FEATURE(feat,flag) \
+ static inline unsigned int omap3_has_ ##feat(void) \
+@@ -493,5 +494,6 @@ OMAP3_HAS_FEATURE(isp, ISP)
+ OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
+ OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
+ OMAP3_HAS_FEATURE(sdrc, SDRC)
++OMAP3_HAS_FEATURE(720mhz, 720MHZ)
+
+ #endif
+--
+1.6.6.1
+
index dea468e5be522de6df147f524631b01652725fe5..eb823c75b03a917f94fcefa378d07e3fca54b2a7 100644 (file)
SRCREV_pn-${PN} = "02f8c6aee8df3cdc935e9bdd4f2d020306035dbe"
# The main PR is now using MACHINE_KERNEL_PR, for omap3 see conf/machine/include/omap3.inc
-MACHINE_KERNEL_PR_append = "e"
+MACHINE_KERNEL_PR_append = "f"
FILESPATHPKG_prepend = "linux-3.0:"
@@ -194,6 +194,7 @@ SRC_URI += "git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git;pro
file://beagle/0002-UNFINISHED-OMAP3-beagle-add-support-for-expansionboa.patch \
file://beagle/0003-HACK-OMAP3-beagle-switch-to-GPTIMER1.patch \
file://beagle/0004-OMAP3-beagle-HACK-add-in-1GHz-OPP.patch \
+ file://beagle/0005-omap3-Add-basic-support-for-720MHz-part.patch \
file://madc/0001-Enabling-Hwmon-driver-for-twl4030-madc.patch \
file://madc/0002-mfd-twl-core-enable-madc-clock.patch \
file://defconfig"