On Tue, May 05, 2020 at 05:20:50PM +0100, Will Deacon wrote:

On Mon, May 04, 2020 at 10:29:05AM +0100, Sudeep Holla wrote:

quoted

diff --git a/drivers/firmware/psci/soc_id.c b/drivers/firmware/psci/soc_id.c
new file mode 100644
index 000000000000..b45f2d78e12e
--- /dev/null
+++ b/drivers/firmware/psci/soc_id.c

@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020 Arm Limited
+ */
+
+#include <linux/arm-smccc.h>
+#include <linux/bitfield.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+
+#define SMCCC_SOC_ID_JEP106_BANK_IDX_MASK	GENMASK(30, 24)
+/*
+ * As per the spec bits[23:16] are JEP-106 identification code with parity bit
+ * for the SiP. We can drop the parity bit.
+ */

Which spec? Could you link to the doc and section here, please?

Sure, sorry since I updated the link in 1/5, I forgot all of it and just
started referring it here.

-- 
Regards,
Sudeep

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