From: Marc Kleine-Budde <mkl@pengutronix.de>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org,
kernel@pengutronix.de, Haibo Chen <haibo.chen@nxp.com>,
Marc Kleine-Budde <mkl@pengutronix.de>
Subject: [PATCH net 6/7] arm64: dts: imx93: add the Flex-CAN stop mode by GPR
Date: Thu, 5 Oct 2023 11:46:38 +0200 [thread overview]
Message-ID: <20231005094639.387019-7-mkl@pengutronix.de> (raw)
In-Reply-To: <20231005094639.387019-1-mkl@pengutronix.de>
From: Haibo Chen <haibo.chen@nxp.com>
imx93 A0 chip use the internal q-channel handshake signal in LPCG
and CCM to automatically handle the Flex-CAN stop mode. But this
method meet issue when do the system PM stress test. IC can't fix
it easily. So in the new imx93 A1 chip, IC drop this method, and
involve back the old way，use the GPR method to trigger the Flex-CAN
stop mode signal. Now NXP claim to drop imx93 A0, and only support
imx93 A1. So here add the stop mode through GPR.
This patch also fix a typo for aonmix_ns_gpr.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/all/20230726112458.3524165-1-haibo.chen@nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
arch/arm64/boot/dts/freescale/imx93.dtsi | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi
index 6f85a05ee7e1..dcf6e4846ac9 100644
--- a/arch/arm64/boot/dts/freescale/imx93.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
@@ -185,7 +185,7 @@ aips1: bus@44000000 {
#size-cells = <1>;
ranges;
- anomix_ns_gpr: syscon@44210000 {
+ aonmix_ns_gpr: syscon@44210000 {
compatible = "fsl,imx93-aonmix-ns-syscfg", "syscon";
reg = <0x44210000 0x1000>;
};
@@ -319,6 +319,7 @@ flexcan1: can@443a0000 {
assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>;
assigned-clock-rates = <40000000>;
fsl,clk-source = /bits/ 8 <0>;
+ fsl,stop-mode = <&aonmix_ns_gpr 0x14 0>;
status = "disabled";
};
@@ -591,6 +592,7 @@ flexcan2: can@425b0000 {
assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>;
assigned-clock-rates = <40000000>;
fsl,clk-source = /bits/ 8 <0>;
+ fsl,stop-mode = <&wakeupmix_gpr 0x0c 2>;
status = "disabled";
};
--
2.40.1
next prev parent reply other threads:[~2023-10-05 14:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-05 9:46 [PATCH net 0/7] pull-request: can 2023-10-05 Marc Kleine-Budde
2023-10-05 9:46 ` [PATCH net 1/7] can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER) Marc Kleine-Budde
2023-10-05 16:44 ` Jakub Kicinski
2023-10-06 10:33 ` Oleksij Rempel
2023-10-05 9:46 ` [PATCH net 2/7] can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior Marc Kleine-Budde
2023-10-05 9:46 ` [PATCH net 3/7] can: sun4i_can: Only show Kconfig if ARCH_SUNXI is set Marc Kleine-Budde
2023-10-05 9:46 ` [PATCH net 4/7] can: sja1000: Always restart the Tx queue after an overrun Marc Kleine-Budde
2023-10-05 9:46 ` [PATCH net 5/7] can: tcan4x5x: Fix id2_register for tcan4553 Marc Kleine-Budde
2023-10-05 9:46 ` Marc Kleine-Budde [this message]
2023-10-05 9:46 ` [PATCH net 7/7] can: flexcan: remove the auto stop mode for IMX93 Marc Kleine-Budde
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