From: Sam Edwards cfsworks@gmail.com
These pinctrls manage the low-speed PCIe signals: - CLKREQ#: An output on the RK3588 (both RC or EP modes), used to request that external clock-generation circuitry provide a clock. - PERST#: An input on the RK3588 in EP mode, used to detect a reset signal from the RC. In RC mode, the hardware does not use this signal: Linux itself generates it by putting the pin in GPIO mode. - WAKE#: In EP mode, this is an output; in RC mode, this is an input.
Each of these signals serves a distinct purpose, and more importantly, PERST# should not be muxed when the RK3588 is in the RC role. Bundling them together in pinctrl groups prevents proper use: indeed, almost none of the current board-specific .dts files make any use of them. (Exception: Rock 5A recently had a patch land that misuses _pins; this patch corrects that.)
However, on some RK3588 boards, the PCIe 3 controller will indefinitely stall the boot if CLKREQ# is not muxed (details in the next patch). This patch unbundles the signals to allow them to be used.
Signed-off-by: Sam Edwards CFSworks@gmail.com Link: https://lore.kernel.org/r/20240912025034.180233-2-CFSworks@gmail.com Signed-off-by: Heiko Stuebner heiko@sntech.de (cherry picked from commit 4294e32111781b3de4d73b944cbd1bc1662a9a7a) --- .../arm64/rockchip/rk3588-base-pinctrl.dtsi | 271 ++++++++++++++---- .../src/arm64/rockchip/rk3588s-rock-5a.dts | 6 +- 2 files changed, 228 insertions(+), 49 deletions(-)
diff --git a/dts/upstream/src/arm64/rockchip/rk3588-base-pinctrl.dtsi b/dts/upstream/src/arm64/rockchip/rk3588-base-pinctrl.dtsi index 30db12c4fc82..b12562e9a985 100644 --- a/dts/upstream/src/arm64/rockchip/rk3588-base-pinctrl.dtsi +++ b/dts/upstream/src/arm64/rockchip/rk3588-base-pinctrl.dtsi @@ -1612,23 +1612,43 @@
pcie20x1 { /omit-if-no-ref/ - pcie20x1m0_pins: pcie20x1m0-pins { + pcie20x1m0_clkreqn: pcie20x1m0-clkreqn { rockchip,pins = /* pcie20x1_2_clkreqn_m0 */ - <3 RK_PC7 4 &pcfg_pull_none>, + <3 RK_PC7 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie20x1m0_perstn: pcie20x1m0-perstn { + rockchip,pins = /* pcie20x1_2_perstn_m0 */ - <3 RK_PD1 4 &pcfg_pull_none>, + <3 RK_PD1 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie20x1m0_waken: pcie20x1m0-waken { + rockchip,pins = /* pcie20x1_2_waken_m0 */ <3 RK_PD0 4 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie20x1m1_pins: pcie20x1m1-pins { + pcie20x1m1_clkreqn: pcie20x1m1-clkreqn { rockchip,pins = /* pcie20x1_2_clkreqn_m1 */ - <4 RK_PB7 4 &pcfg_pull_none>, + <4 RK_PB7 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie20x1m1_perstn: pcie20x1m1-perstn { + rockchip,pins = /* pcie20x1_2_perstn_m1 */ - <4 RK_PC1 4 &pcfg_pull_none>, + <4 RK_PC1 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie20x1m1_waken: pcie20x1m1-waken { + rockchip,pins = /* pcie20x1_2_waken_m1 */ <4 RK_PC0 4 &pcfg_pull_none>; }; @@ -1654,52 +1674,127 @@
pcie30x1 { /omit-if-no-ref/ - pcie30x1m0_pins: pcie30x1m0-pins { + pcie30x1m0_0_clkreqn: pcie30x1m0-0-clkreqn { rockchip,pins = /* pcie30x1_0_clkreqn_m0 */ - <0 RK_PC0 12 &pcfg_pull_none>, + <0 RK_PC0 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m0_0_perstn: pcie30x1m0-0-perstn { + rockchip,pins = /* pcie30x1_0_perstn_m0 */ - <0 RK_PC5 12 &pcfg_pull_none>, + <0 RK_PC5 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m0_0_waken: pcie30x1m0-0-waken { + rockchip,pins = /* pcie30x1_0_waken_m0 */ - <0 RK_PC4 12 &pcfg_pull_none>, + <0 RK_PC4 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m0_1_clkreqn: pcie30x1m0-1-clkreqn { + rockchip,pins = /* pcie30x1_1_clkreqn_m0 */ - <0 RK_PB5 12 &pcfg_pull_none>, + <0 RK_PB5 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m0_1_perstn: pcie30x1m0-1-perstn { + rockchip,pins = /* pcie30x1_1_perstn_m0 */ - <0 RK_PB7 12 &pcfg_pull_none>, + <0 RK_PB7 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m0_1_waken: pcie30x1m0-1-waken { + rockchip,pins = /* pcie30x1_1_waken_m0 */ <0 RK_PB6 12 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x1m1_pins: pcie30x1m1-pins { + pcie30x1m1_0_clkreqn: pcie30x1m1-0-clkreqn { rockchip,pins = /* pcie30x1_0_clkreqn_m1 */ - <4 RK_PA3 4 &pcfg_pull_none>, + <4 RK_PA3 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m1_0_perstn: pcie30x1m1-0-perstn { + rockchip,pins = /* pcie30x1_0_perstn_m1 */ - <4 RK_PA5 4 &pcfg_pull_none>, + <4 RK_PA5 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m1_0_waken: pcie30x1m1-0-waken { + rockchip,pins = /* pcie30x1_0_waken_m1 */ - <4 RK_PA4 4 &pcfg_pull_none>, + <4 RK_PA4 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m1_1_clkreqn: pcie30x1m1-1-clkreqn { + rockchip,pins = /* pcie30x1_1_clkreqn_m1 */ - <4 RK_PA0 4 &pcfg_pull_none>, + <4 RK_PA0 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m1_1_perstn: pcie30x1m1-1-perstn { + rockchip,pins = /* pcie30x1_1_perstn_m1 */ - <4 RK_PA2 4 &pcfg_pull_none>, + <4 RK_PA2 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m1_1_waken: pcie30x1m1-1-waken { + rockchip,pins = /* pcie30x1_1_waken_m1 */ <4 RK_PA1 4 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x1m2_pins: pcie30x1m2-pins { + pcie30x1m2_0_clkreqn: pcie30x1m2-0-clkreqn { rockchip,pins = /* pcie30x1_0_clkreqn_m2 */ - <1 RK_PB5 4 &pcfg_pull_none>, + <1 RK_PB5 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m2_0_perstn: pcie30x1m2-0-perstn { + rockchip,pins = /* pcie30x1_0_perstn_m2 */ - <1 RK_PB4 4 &pcfg_pull_none>, + <1 RK_PB4 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m2_0_waken: pcie30x1m2-0-waken { + rockchip,pins = /* pcie30x1_0_waken_m2 */ - <1 RK_PB3 4 &pcfg_pull_none>, + <1 RK_PB3 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m2_1_clkreqn: pcie30x1m2-1-clkreqn { + rockchip,pins = /* pcie30x1_1_clkreqn_m2 */ - <1 RK_PA0 4 &pcfg_pull_none>, + <1 RK_PA0 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m2_1_perstn: pcie30x1m2-1-perstn { + rockchip,pins = /* pcie30x1_1_perstn_m2 */ - <1 RK_PA7 4 &pcfg_pull_none>, + <1 RK_PA7 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x1m2_1_waken: pcie30x1m2-1-waken { + rockchip,pins = /* pcie30x1_1_waken_m2 */ <1 RK_PA1 4 &pcfg_pull_none>; }; @@ -1721,45 +1816,85 @@
pcie30x2 { /omit-if-no-ref/ - pcie30x2m0_pins: pcie30x2m0-pins { + pcie30x2m0_clkreqn: pcie30x2m0-clkreqn { rockchip,pins = /* pcie30x2_clkreqn_m0 */ - <0 RK_PD1 12 &pcfg_pull_none>, + <0 RK_PD1 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m0_perstn: pcie30x2m0-perstn { + rockchip,pins = /* pcie30x2_perstn_m0 */ - <0 RK_PD4 12 &pcfg_pull_none>, + <0 RK_PD4 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m0_waken: pcie30x2m0-waken { + rockchip,pins = /* pcie30x2_waken_m0 */ <0 RK_PD2 12 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x2m1_pins: pcie30x2m1-pins { + pcie30x2m1_clkreqn: pcie30x2m1-clkreqn { rockchip,pins = /* pcie30x2_clkreqn_m1 */ - <4 RK_PA6 4 &pcfg_pull_none>, + <4 RK_PA6 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m1_perstn: pcie30x2m1-perstn { + rockchip,pins = /* pcie30x2_perstn_m1 */ - <4 RK_PB0 4 &pcfg_pull_none>, + <4 RK_PB0 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m1_waken: pcie30x2m1-waken { + rockchip,pins = /* pcie30x2_waken_m1 */ <4 RK_PA7 4 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x2m2_pins: pcie30x2m2-pins { + pcie30x2m2_clkreqn: pcie30x2m2-clkreqn { rockchip,pins = /* pcie30x2_clkreqn_m2 */ - <3 RK_PD2 4 &pcfg_pull_none>, + <3 RK_PD2 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m2_perstn: pcie30x2m2-perstn { + rockchip,pins = /* pcie30x2_perstn_m2 */ - <3 RK_PD4 4 &pcfg_pull_none>, + <3 RK_PD4 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m2_waken: pcie30x2m2-waken { + rockchip,pins = /* pcie30x2_waken_m2 */ <3 RK_PD3 4 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x2m3_pins: pcie30x2m3-pins { + pcie30x2m3_clkreqn: pcie30x2m3-clkreqn { rockchip,pins = /* pcie30x2_clkreqn_m3 */ - <1 RK_PD7 4 &pcfg_pull_none>, + <1 RK_PD7 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m3_perstn: pcie30x2m3-perstn { + rockchip,pins = /* pcie30x2_perstn_m3 */ - <1 RK_PB7 4 &pcfg_pull_none>, + <1 RK_PB7 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x2m3_waken: pcie30x2m3-waken { + rockchip,pins = /* pcie30x2_waken_m3 */ <1 RK_PB6 4 &pcfg_pull_none>; }; @@ -1774,45 +1909,85 @@
pcie30x4 { /omit-if-no-ref/ - pcie30x4m0_pins: pcie30x4m0-pins { + pcie30x4m0_clkreqn: pcie30x4m0-clkreqn { rockchip,pins = /* pcie30x4_clkreqn_m0 */ - <0 RK_PC6 12 &pcfg_pull_none>, + <0 RK_PC6 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m0_perstn: pcie30x4m0-perstn { + rockchip,pins = /* pcie30x4_perstn_m0 */ - <0 RK_PD0 12 &pcfg_pull_none>, + <0 RK_PD0 12 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m0_waken: pcie30x4m0-waken { + rockchip,pins = /* pcie30x4_waken_m0 */ <0 RK_PC7 12 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x4m1_pins: pcie30x4m1-pins { + pcie30x4m1_clkreqn: pcie30x4m1-clkreqn { rockchip,pins = /* pcie30x4_clkreqn_m1 */ - <4 RK_PB4 4 &pcfg_pull_none>, + <4 RK_PB4 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m1_perstn: pcie30x4m1-perstn { + rockchip,pins = /* pcie30x4_perstn_m1 */ - <4 RK_PB6 4 &pcfg_pull_none>, + <4 RK_PB6 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m1_waken: pcie30x4m1-waken { + rockchip,pins = /* pcie30x4_waken_m1 */ <4 RK_PB5 4 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x4m2_pins: pcie30x4m2-pins { + pcie30x4m2_clkreqn: pcie30x4m2-clkreqn { rockchip,pins = /* pcie30x4_clkreqn_m2 */ - <3 RK_PC4 4 &pcfg_pull_none>, + <3 RK_PC4 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m2_perstn: pcie30x4m2-perstn { + rockchip,pins = /* pcie30x4_perstn_m2 */ - <3 RK_PC6 4 &pcfg_pull_none>, + <3 RK_PC6 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m2_waken: pcie30x4m2-waken { + rockchip,pins = /* pcie30x4_waken_m2 */ <3 RK_PC5 4 &pcfg_pull_none>; };
/omit-if-no-ref/ - pcie30x4m3_pins: pcie30x4m3-pins { + pcie30x4m3_clkreqn: pcie30x4m3-clkreqn { rockchip,pins = /* pcie30x4_clkreqn_m3 */ - <1 RK_PB0 4 &pcfg_pull_none>, + <1 RK_PB0 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m3_perstn: pcie30x4m3-perstn { + rockchip,pins = /* pcie30x4_perstn_m3 */ - <1 RK_PB2 4 &pcfg_pull_none>, + <1 RK_PB2 4 &pcfg_pull_none>; + }; + + /omit-if-no-ref/ + pcie30x4m3_waken: pcie30x4m3-waken { + rockchip,pins = /* pcie30x4_waken_m3 */ <1 RK_PB1 4 &pcfg_pull_none>; }; diff --git a/dts/upstream/src/arm64/rockchip/rk3588s-rock-5a.dts b/dts/upstream/src/arm64/rockchip/rk3588s-rock-5a.dts index a385e0991990..d6a0b559edca 100644 --- a/dts/upstream/src/arm64/rockchip/rk3588s-rock-5a.dts +++ b/dts/upstream/src/arm64/rockchip/rk3588s-rock-5a.dts @@ -310,7 +310,7 @@ };
&pcie2x1l2 { - pinctrl-0 = <&pcie20x1m0_pins>; + pinctrl-0 = <&pcie2_reset>, <&pcie20x1m0_clkreqn>, <&pcie20x1m0_waken>; pinctrl-names = "default"; reset-gpios = <&gpio3 RK_PD1 GPIO_ACTIVE_HIGH>; vpcie3v3-supply = <&vcc3v3_wf>; @@ -328,6 +328,10 @@ pow_en: pow-en { rockchip,pins = <0 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>; }; + + pcie2_reset: pcie2-reset { + rockchip,pins = <3 RK_PD1 RK_FUNC_GPIO &pcfg_pull_none>; + }; };
power {