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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2015-05-26 14:06:57 +0200
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2015-10-02 15:35:17 +0200
commit0fc197c7cb3b1139fccb3b92e8db19a93f81f6fb (patch)
tree4655ea1c882db281fe8dbdd896631ea973f11083 /drivers
parentdrivers: firmware: psci: add extended stateid power_state support (diff)
downloadlinux-0fc197c7cb3b1139fccb3b92e8db19a93f81f6fb.tar.xz
linux-0fc197c7cb3b1139fccb3b92e8db19a93f81f6fb.zip
drivers: firmware: psci: add PSCI v1.0 DT bindings
PSCI 1.0 is designed to be fully compliant to the PSCI 0.2 specification, with minor differences that are described in the PSCI specification. In particular, PSCI v1.0 augments the specification with a new power_state format (extended stateid - probeable through the PSCI_FEATURES call), changes some function return codes and functions usage requirements wrt PSCI 0.2. These changes mean that 1.0 vs 0.2 compliancy should be enforced through a DT compatible string that allows firmware to specify 1.0 only compliancy so that older kernels are prevented from using PSCI 1.0 FW implementations in a non-compatible way (eg by calling a 1.0 FW implementation and expecting 0.2 behaviour). This patch adds PSCI 1.0 DT bindings and related compatible string. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Jisheng Zhang <jszhang@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firmware/psci.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c
index 384224320455..442a42b5cece 100644
--- a/drivers/firmware/psci.c
+++ b/drivers/firmware/psci.c
@@ -392,6 +392,7 @@ out_put_node:
static const struct of_device_id const psci_of_match[] __initconst = {
{ .compatible = "arm,psci", .data = psci_0_1_init},
{ .compatible = "arm,psci-0.2", .data = psci_0_2_init},
+ { .compatible = "arm,psci-1.0", .data = psci_0_2_init},
{},
};