[PATCH 2/2] firmware: samsung: acpm: add Exynos850 support

[Alexey Klimov]

The Exynos850 SoC contains an APM co-processor. Communication
with this hardware block is established using the ACPM protocol,
which handles IPC messages for clocks, power, thermal management,
and PMIC control.

Add the "samsung,exynos850-acpm-ipc" compatible string along with
its associated match data. This includes the specific initialisation
data base offset (which differs from the GS101 offset) and the
"exynos850-acpm-clk" device name required to properly instantiate
the clock provider.

Signed-off-by: Alexey Klimov <alexey.klimov at linaro.org>
---
 drivers/firmware/samsung/exynos-acpm.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/firmware/samsung/exynos-acpm.c b/drivers/firmware/samsung/exynos-acpm.c
index 16c46ed60837..db4138f36038 100644
--- a/drivers/firmware/samsung/exynos-acpm.c
+++ b/drivers/firmware/samsung/exynos-acpm.c
@@ -37,6 +37,7 @@
 #define ACPM_POLL_TIMEOUT_US		(100 * USEC_PER_MSEC)
 #define ACPM_TX_TIMEOUT_US		500000
 
+#define ACPM_EXYNOS850_INITDATA_BASE	0x7000
 #define ACPM_GS101_INITDATA_BASE	0xa000
 
 /**
@@ -766,6 +767,11 @@ struct acpm_handle *devm_acpm_get_by_node(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_acpm_get_by_node);
 
+static const struct acpm_match_data acpm_exynos850 = {
+	.initdata_base = ACPM_EXYNOS850_INITDATA_BASE,
+	.acpm_clk_dev_name = "exynos850-acpm-clk",
+};
+
 static const struct acpm_match_data acpm_gs101 = {
 	.initdata_base = ACPM_GS101_INITDATA_BASE,
 	.acpm_clk_dev_name = "gs101-acpm-clk",
@@ -776,6 +782,10 @@ static const struct of_device_id acpm_match[] = {
 		.compatible = "google,gs101-acpm-ipc",
 		.data = &acpm_gs101,
 	},
+	{
+		.compatible = "samsung,exynos850-acpm-ipc",
+		.data = &acpm_exynos850,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, acpm_match);

-- 
2.51.0