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authorJan Kiszka <jan.kiszka@siemens.com>2015-04-21 07:18:35 +0200
committerTom Warren <twarren@nvidia.com>2015-05-13 09:24:15 -0700
commitffdf9f9ae057131375534df5f1e798d1e64785e9 (patch)
treed66c519bbabbe39e1d3a7521544a67338bbd39f2 /arch/arm/include/asm/arch-tegra124
parentce416fac3802528702e46663882d67cb8561b4c8 (diff)
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tegra124: Add PSCI support for Tegra124
This is based on Thierry Reding's work and uses Ian Campell's preparatory patches. It comes with full support for CPU_ON/OFF PSCI services. The algorithm used in this version for turning CPUs on and off was proposed by Peter De Schrijver and Thierry Reding in http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/210881. It consists of first enabling CPU1..3 via the PMC, just to powergate them again with the help of the Flow Controller. Once the Flow Controller is in place, we can leave the PMC alone while processing CPU_ON and CPU_OFF PSCI requests. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm/include/asm/arch-tegra124')
-rw-r--r--arch/arm/include/asm/arch-tegra124/flow.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra124/flow.h b/arch/arm/include/asm/arch-tegra124/flow.h
index 0db1881bc6..d6f515f1e9 100644
--- a/arch/arm/include/asm/arch-tegra124/flow.h
+++ b/arch/arm/include/asm/arch-tegra124/flow.h
@@ -37,4 +37,10 @@ struct flow_ctlr {
/* FLOW_CTLR_CLUSTER_CONTROL_0 0x2c */
#define ACTIVE_LP (1 << 0)
+/* CPUn_CSR_0 */
+#define CSR_ENABLE (1 << 0)
+#define CSR_IMMEDIATE_WAKE (1 << 3)
+#define CSR_WAIT_WFI_SHIFT 8
+#define CSR_PWR_OFF_STS (1 << 16)
+
#endif /* _TEGRA124_FLOW_H_ */
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