linux-kernel - [PATCH v4 6/6] nvmem: rockchip-otp: Add support for RK3528

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Message-ID: <20260205211901.490181-7-heiko@sntech.de>
Date: Thu,  5 Feb 2026 22:19:01 +0100
From: Heiko Stuebner <heiko@...ech.de>
To: srini@...nel.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	heiko@...ech.de,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	kever.yang@...k-chips.com,
	finley.xiao@...k-chips.com,
	w@....eu,
	jonas@...boo.se
Subject: [PATCH v4 6/6] nvmem: rockchip-otp: Add support for RK3528

From: Jonas Karlman <jonas@...boo.se>

Add support for the OTP controller in RK3528. The OTPC is similar to the
OTPC in RK3562 and RK3568, exept for a missing phy clock and reset.

Signed-off-by: Jonas Karlman <jonas@...boo.se>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
---
 drivers/nvmem/rockchip-otp.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/nvmem/rockchip-otp.c b/drivers/nvmem/rockchip-otp.c
index 62ce22d72586..0ec78b5e19e7 100644
--- a/drivers/nvmem/rockchip-otp.c
+++ b/drivers/nvmem/rockchip-otp.c
@@ -333,6 +333,18 @@ static const struct rockchip_data px30_data = {
 	.reg_read = px30_otp_read,
 };
 
+static const char * const rk3528_otp_clocks[] = {
+	"otp", "apb_pclk", "sbpi",
+};
+
+static const struct rockchip_data rk3528_data = {
+	.size = 0x80,
+	.word_size = sizeof(u16),
+	.clks = rk3528_otp_clocks,
+	.num_clks = ARRAY_SIZE(rk3528_otp_clocks),
+	.reg_read = rk3568_otp_read,
+};
+
 static const char * const rk3568_otp_clocks[] = {
 	"otp", "apb_pclk", "phy", "sbpi",
 };
@@ -376,6 +388,10 @@ static const struct of_device_id rockchip_otp_match[] = {
 		.compatible = "rockchip,rk3308-otp",
 		.data = &px30_data,
 	},
+	{
+		.compatible = "rockchip,rk3528-otp",
+		.data = &rk3528_data,
+	},
 	{
 		.compatible = "rockchip,rk3562-otp",
 		.data = &rk3568_data,
-- 
2.47.2