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| author | Lucas Stach <dev@lynxeye.de> | 2014-06-03 22:34:59 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-06-05 08:01:14 +0200 |
| commit | 3e5f06069614841035f6f71aeb5180c46863b6f0 (patch) | |
| tree | 4582c70d7d1249c58fc109e2d63925610a6e93fc /arch/arm/mach-tegra | |
| parent | 3cc59d0e21d2b9d7dab137aa9638f5d05906c043 (diff) | |
| download | barebox-3e5f06069614841035f6f71aeb5180c46863b6f0.tar.gz barebox-3e5f06069614841035f6f71aeb5180c46863b6f0.tar.xz | |
tegra: power up additional partitions on Tegra124
Those 3 are needed to power CPU0 from the CPUG cluster.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-tegra')
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/tegra20-pmc.h | 4 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra_avp_init.c | 24 |
2 files changed, 22 insertions, 6 deletions
diff --git a/arch/arm/mach-tegra/include/mach/tegra20-pmc.h b/arch/arm/mach-tegra/include/mach/tegra20-pmc.h index 3a05e0f109..30ac06508c 100644 --- a/arch/arm/mach-tegra/include/mach/tegra20-pmc.h +++ b/arch/arm/mach-tegra/include/mach/tegra20-pmc.h @@ -66,4 +66,8 @@ #define PMC_PWRGATE_STATUS_TD (1 << 1) #define PMC_PWRGATE_STATUS_CPU (1 << 0) +#define PMC_PARTID_CRAIL 0 +#define PMC_PARTID_CE0 14 +#define PMC_PARTID_C0NC 15 + #define PMC_SCRATCH(i) (0x050 + 0x4*i) diff --git a/arch/arm/mach-tegra/tegra_avp_init.c b/arch/arm/mach-tegra/tegra_avp_init.c index cc8b0e24bf..3d21963aa1 100644 --- a/arch/arm/mach-tegra/tegra_avp_init.c +++ b/arch/arm/mach-tegra/tegra_avp_init.c @@ -197,26 +197,38 @@ static void start_cpu0_clocks(void) tegra_ll_delay_usec(300); } -static void maincomplex_powerup(void) +static void power_up_partition(u32 partid) { u32 reg; - if (!(readl(TEGRA_PMC_BASE + PMC_PWRGATE_STATUS) & - PMC_PWRGATE_STATUS_CPU)) { - writel(PMC_PWRGATE_TOGGLE_START | PMC_PWRGATE_TOGGLE_PARTID_CPU, + if (!(readl(TEGRA_PMC_BASE + PMC_PWRGATE_STATUS) & (1 << partid))) { + writel(PMC_PWRGATE_TOGGLE_START | partid, TEGRA_PMC_BASE + PMC_PWRGATE_TOGGLE); while (!(readl(TEGRA_PMC_BASE + PMC_PWRGATE_STATUS) & - PMC_PWRGATE_STATUS_CPU)); + (1 << partid))); reg = readl(TEGRA_PMC_BASE + PMC_REMOVE_CLAMPING_CMD); - reg |= PMC_REMOVE_CLAMPING_CMD_CPU; + reg |= (1 << partid); writel(reg, TEGRA_PMC_BASE + PMC_REMOVE_CLAMPING_CMD); tegra_ll_delay_usec(1000); } } +static void maincomplex_powerup(void) +{ + /* main cpu rail */ + power_up_partition(PMC_PARTID_CRAIL); + + if (tegra_get_chiptype() >= TEGRA114) { + /* fast cluster uncore part */ + power_up_partition(PMC_PARTID_C0NC); + /* fast cluster cpu0 part */ + power_up_partition(PMC_PARTID_CE0); + } +} + static void tegra_cluster_switch_hp(void) { u32 reg; |