[PATCH RESEND 1/2] irqchip: Add generic gic-v1/gic-v2 compat strings.

[Nikolay Borisov]

The current set of GIC compatible strings only contains specific
implementations (e.g. arm,cortex-a9-gic) rather than revisions of the
standard (e.g. arm,gic-v2), so each new implementation must either claim
to be an extension of an existing implementation or have a new string
added to the driver. This may be problematic when workarounds are
required for bugs in particular implementations, as said workaround may
end up targeting a wider set of implementations than intended.

To prevent these issues, this patch adds compatible strings for the
revisions of the GIC spec which all GIC implementations should be able
to claim conformance to in addition to any particular implementation
specific string, e.g.

compatible = "$VENDOR,specific-gic-variant", "arm,gic-v2";

Signed-off-by: Nikolay Borisov <Nikolay.Borisov at arm.com>
Acked-by: Mark Rutland <Mark.Rutland at arm.com>
---
 drivers/irqchip/irq-gic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 57d165e..89e9b05 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1073,6 +1073,8 @@ gic_of_init(struct device_node *node, struct device_node *parent)
 }
 IRQCHIP_DECLARE(cortex_a15_gic, "arm,cortex-a15-gic", gic_of_init);
 IRQCHIP_DECLARE(cortex_a9_gic, "arm,cortex-a9-gic", gic_of_init);
+IRQCHIP_DECLARE(gic_v1, "arm,gic-v1", gic_of_init);
+IRQCHIP_DECLARE(gic_v2, "arm,gic-v2", gic_of_init);
 IRQCHIP_DECLARE(msm_8660_qgic, "qcom,msm-8660-qgic", gic_of_init);
 IRQCHIP_DECLARE(msm_qgic2, "qcom,msm-qgic2", gic_of_init);
 
-- 
1.8.1.5