raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

ARM: dts: Move rpi-otp nodes onto a dedicated bus

Browse Source 
The rpi-otp driver uses a virtualised, OTP-relative addressing scheme.
However, when instance nodes are children of "/soc" they appear to be
addressable directly by the host, which is wrong (but not in a way which
causes an error unless one goes looking for one).

Add a wrapper (bus) node without a "ranges" property to make the
separation clear.

See: https://github.com/raspberrypi/linux/issues/6196

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
This commit is contained in:
Phil Elwell
2024-05-30 15:59:52 +01:00
committed by Dom Cobley
parent e82ad4a8bc
commit ea34d5aaf9
3 changed files with 68 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
arch/arm/boot/dts/broadcom/bcm2708-rpi.dtsi
View File

@@ -26,18 +26,24 @@
};
&soc {
nvmem_otp: nvmem_otp {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <0 192>;
status = "okay";
};
nvmem {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
nvmem_cust: nvmem_cust {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <1 8>;
status = "okay";
nvmem_otp: nvmem_otp {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <0 192>;
status = "okay";
};
nvmem_cust: nvmem_cust {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <1 8>;
status = "okay";
};
};
};

39
arch/arm/boot/dts/broadcom/bcm2711-rpi-ds.dtsi
View File

@@ -90,26 +90,31 @@
/* Add the physical <-> DMA mapping for the I/O space */
dma-ranges = <0xc0000000 0x0 0x00000000 0x40000000>,
<0x7c000000 0x0 0xfc000000 0x03800000>;
nvmem {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
nvmem_otp: nvmem_otp {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <0 166>;
status = "okay";
};
nvmem_otp: nvmem_otp {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <0 166>;
status = "okay";
};
nvmem_cust: nvmem_cust {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <1 8>;
status = "okay";
};
nvmem_cust: nvmem_cust {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <1 8>;
status = "okay";
};
nvmem_priv: nvmem_priv {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <3 8>;
status = "okay";
nvmem_priv: nvmem_priv {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <3 8>;
status = "okay";
};
};
};

52
arch/arm/boot/dts/broadcom/bcm2712-rpi.dtsi
View File

@@ -45,32 +45,38 @@
trickle-charge-microvolt = <0>;
};
nvmem_otp: nvmem_otp {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <0 192>;
status = "okay";
};
nvmem {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
nvmem_cust: nvmem_cust {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <1 8>;
status = "okay";
};
nvmem_otp: nvmem_otp {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <0 192>;
status = "okay";
};
nvmem_mac: nvmem_mac {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <2 6>;
status = "okay";
};
nvmem_cust: nvmem_cust {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <1 8>;
status = "okay";
};
nvmem_priv: nvmem_priv {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <3 16>;
status = "okay";
nvmem_mac: nvmem_mac {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <2 6>;
status = "okay";
};
nvmem_priv: nvmem_priv {
compatible = "raspberrypi,rpi-otp";
firmware = <&firmware>;
reg = <3 16>;
status = "okay";
};
};
/* Define these notional regulators for use by overlays, etc. */