Re: [PATCH] arm64: dts: imx8mp: Add SNVS LPGPR
From: Alexander Stein <hidden>
Date: 2022-08-24 05:51:58
Also in:
linux-arm-kernel
Hello Marek, Am Dienstag, 23. August 2022, 18:56:02 CEST schrieb Marek Vasut:
quoted hunk ↗ jump to hunk
Add SNVS LPGPR bindings to MX8M Plus, the LPGPR is used to store e.g. boot counter. Signed-off-by: Marek Vasut <marex@denx.de> --- Cc: Fabio Estevam <redacted> Cc: Marcel Ziswiler <redacted> Cc: Peng Fan <peng.fan@nxp.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Shawn Guo <shawnguo@kernel.org> Cc: NXP Linux Team <redacted> Cc: devicetree@vger.kernel.org To: linux-arm-kernel@lists.infradead.org --- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 5 +++++ 1 file changed, 5 insertions(+)diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsib/arch/arm64/boot/dts/freescale/imx8mp.dtsi index f7adcb2c14880..21689e9e68170 100644--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi@@ -478,6 +478,11 @@ snvs_pwrkey: snvs-powerkey { wakeup-source; status = "disabled"; }; + + snvs_lpgpr: snvs-lpgpr { + compatible =
"fsl,imx8mp-snvs-lpgpr",
+
"fsl,imx7d-snvs-lpgpr";
+ };
};
clk: clock-controller@30380000 {Do you have any information that the i.MX8M Plus actually has the HPLR register (at offset 0)? This is used in snvs_lpgpr_write. I can't find it in the RM, although GPR_SL is referenced in LPGPRx register description. Best regards, Alexander