[PATCH v2 2/9] soc: apple: mailbox: Add Apple A11 and T2 mailbox support
From: Nick Chan <hidden>
Date: 2025-08-18 08:43:36
Also in:
asahi, linux-devicetree, linux-iommu, linux-nvme, lkml
Subsystem:
arm/apple machine support, the rest · Maintainers:
Sven Peter, Janne Grunau, Linus Torvalds
Add ASC mailbox support for Apple A11 and T2 SoCs, which is used for coprocessors in the system. Reviewed-by: Sven Peter <sven@kernel.org> Signed-off-by: Nick Chan <redacted> --- drivers/soc/apple/mailbox.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/drivers/soc/apple/mailbox.c b/drivers/soc/apple/mailbox.c
index 49a0955e82d6cf5eef83e5f63ba8d31194c65324..8f29108dc69ac964236121d439e86c923a441265 100644
--- a/drivers/soc/apple/mailbox.c
+++ b/drivers/soc/apple/mailbox.c@@ -47,6 +47,9 @@ #define APPLE_ASC_MBOX_I2A_RECV0 0x830 #define APPLE_ASC_MBOX_I2A_RECV1 0x838 +#define APPLE_T8015_MBOX_A2I_CONTROL 0x108 +#define APPLE_T8015_MBOX_I2A_CONTROL 0x10c + #define APPLE_M3_MBOX_CONTROL_FULL BIT(16) #define APPLE_M3_MBOX_CONTROL_EMPTY BIT(17)
@@ -382,6 +385,21 @@ static int apple_mbox_probe(struct platform_device *pdev) return 0; } +static const struct apple_mbox_hw apple_mbox_t8015_hw = { + .control_full = APPLE_ASC_MBOX_CONTROL_FULL, + .control_empty = APPLE_ASC_MBOX_CONTROL_EMPTY, + + .a2i_control = APPLE_T8015_MBOX_A2I_CONTROL, + .a2i_send0 = APPLE_ASC_MBOX_A2I_SEND0, + .a2i_send1 = APPLE_ASC_MBOX_A2I_SEND1, + + .i2a_control = APPLE_T8015_MBOX_I2A_CONTROL, + .i2a_recv0 = APPLE_ASC_MBOX_I2A_RECV0, + .i2a_recv1 = APPLE_ASC_MBOX_I2A_RECV1, + + .has_irq_controls = false, +}; + static const struct apple_mbox_hw apple_mbox_asc_hw = { .control_full = APPLE_ASC_MBOX_CONTROL_FULL, .control_empty = APPLE_ASC_MBOX_CONTROL_EMPTY,
@@ -418,6 +436,7 @@ static const struct apple_mbox_hw apple_mbox_m3_hw = { static const struct of_device_id apple_mbox_of_match[] = { { .compatible = "apple,asc-mailbox-v4", .data = &apple_mbox_asc_hw }, + { .compatible = "apple,t8015-asc-mailbox", .data = &apple_mbox_t8015_hw }, { .compatible = "apple,m3-mailbox-v2", .data = &apple_mbox_m3_hw }, {} };
--
2.50.1