linux-kernel - [PATCH 3/3] soc/tegra: fuse: add opt-dla-disable nvmem cell

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Message-ID: <1665136268-29494-4-git-send-email-kkartik@nvidia.com>
Date:   Fri, 7 Oct 2022 15:21:08 +0530
From:   Kartik <kkartik@...dia.com>
To:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <digetx@...il.com>, <kkartik@...dia.com>, <windhl@....com>,
        <ndesaulniers@...gle.com>, <nathan@...nel.org>,
        <skamble@...dia.com>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] soc/tegra: fuse: add opt-dla-disable nvmem cell

Tegra234 DLA (Deep Learning Accelerator) driver requires access to
opt_dla_disable fuse to correctly identify internal or production
boards.

Add nvmem cell "opt-dla-disable" for Tegra234 SOC, this allows DLA
driver to read opt_dla_disable fuse via nvmem interface.

Signed-off-by: Kartik <kkartik@...dia.com>
---
 drivers/soc/tegra/fuse/fuse-tegra30.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/soc/tegra/fuse/fuse-tegra30.c b/drivers/soc/tegra/fuse/fuse-tegra30.c
index 932a03c64534a..0ee907af655b3 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra30.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra30.c
@@ -630,6 +630,12 @@ static const struct nvmem_cell_info tegra234_fuse_cells[] = {
 		.bytes = 4,
 		.bit_offset = 0,
 		.nbits = 32,
+	}, {
+		.name = "opt-dla-disable",
+		.offset = 0x3f0,
+		.bytes = 4,
+		.bit_offset = 0,
+		.nbits = 32,
 	},
 };
 
@@ -644,6 +650,16 @@ static const struct nvmem_cell_lookup tegra234_fuse_lookups[] = {
 		.cell_name = "xusb-pad-calibration-ext",
 		.dev_id = "3520000.padctl",
 		.con_id = "calibration-ext",
+	}, {
+		.nvmem_name = "fuse",
+		.cell_name = "opt-dla-disable",
+		.dev_id = "15880000.nvdla0",
+		.con_id = "dla-disable",
+	}, {
+		.nvmem_name = "fuse",
+		.cell_name = "opt-dla-disable",
+		.dev_id = "158c0000.nvdla1",
+		.con_id = "dla-disable",
 	},
 };
 
-- 
2.17.1