Dear list, you may enjoy the patches below, regarding proper settings for higher SPI clocks on RK3288. Thank you for having a look! Base Version: Tinker OS 2.0.7 Linux Kernels Version 4.4.103 https://github.com/TinkerBoard/debian_kernel/tree/release Regards, Eric --- arch/arm/boot/dts/rk3288.dtsi.original 2018-06-01 04:25:35 +0200 +++ arch/arm/boot/dts/rk3288.dtsi 2018-08-07 19:04:10 +0200 @@ -373,8 +373,9 @@ dmas = <&dmac_peri 11>, <&dmac_peri 12>; dma-names = "tx", "rx"; interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>; - pinctrl-names = "default"; + pinctrl-names = "default", "high_speed"; pinctrl-0 = <&spi0_clk &spi0_tx &spi0_rx &spi0_cs0 &spi0_cs1>; + pinctrl-1 = <&spi0_clk_h &spi0_tx_h &spi0_rx_h &spi0_cs0_h &spi0_cs1_h>; reg = <0x0 0xff110000 0x0 0x1000>; #address-cells = <1>; #size-cells = <0>; @@ -403,9 +404,11 @@ dmas = <&dmac_peri 15>, <&dmac_peri 16>; dma-names = "tx", "rx"; interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>; - pinctrl-names = "default"; - //pinctrl-0 = <&spi2_clk &spi2_tx &spi2_rx &spi2_cs0 &spi2_cs1>; + pinctrl-names = "default", "high_speed"; + // pinctrl-0 = <&spi2_clk &spi2_tx &spi2_rx &spi2_cs0 &spi2_cs1>; pinctrl-0 = <&spi2_clk &spi2_tx &spi2_rx &spi2_cs0>; + // pinctrl-1 = <&spi2_clk_h &spi2_tx_h &spi2_rx_h &spi2_cs0_h &spi2_cs1_h>; + pinctrl-1 = <&spi2_clk_h &spi2_tx_h &spi2_rx_h &spi2_cs0_h>; reg = <0x0 0xff130000 0x0 0x1000>; #address-cells = <2>; #size-cells = <0>; @@ -2186,7 +2189,24 @@ spi0_cs1: spi0-cs1 { rockchip,pins = <5 16 RK_FUNC_1 &pcfg_pull_up>; }; + + spi0_clk_h: spi0-clk-h { + rockchip,pins = <5 12 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + spi0_cs0_h: spi0-cs0-h { + rockchip,pins = <5 13 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + spi0_tx_h: spi0-tx-h { + rockchip,pins = <5 14 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + spi0_rx_h: spi0-rx-h { + rockchip,pins = <5 15 RK_FUNC_1 &pcfg_pull_up>; + }; + spi0_cs1_h: spi0-cs1-h { + rockchip,pins = <5 16 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; }; + spi1 { spi1_clk: spi1-clk { rockchip,pins = <7 12 RK_FUNC_2 &pcfg_pull_up>; @@ -2218,6 +2238,23 @@ spi2_tx: spi2-tx { rockchip,pins = <8 9 RK_FUNC_1 &pcfg_pull_up>; }; + + spi2_cs1_h: spi2-cs1-h { + rockchip,pins = <8 3 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + spi2_clk_h: spi2-clk-h { + rockchip,pins = <8 6 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + spi2_cs0_h: spi2-cs0-h { + rockchip,pins = <8 7 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + spi2_rx_h: spi2-rx-h { + rockchip,pins = <8 8 RK_FUNC_1 &pcfg_pull_up>; + }; + spi2_tx_h: spi2-tx-h { + rockchip,pins = <8 9 RK_FUNC_1 &pcfg_pull_none_12ma>; + }; + }; uart0 { --- arch/arm/boot/dts/rk3288-miniarm.dts.original 2018-06-01 04:25:35 +0200 +++ arch/arm/boot/dts/rk3288-miniarm.dts 2018-08-07 19:04:05 +0200 @@ -637,8 +637,9 @@ &spi0 { status = "okay"; max-freq = <50000000>; - pinctrl-names = "default"; + pinctrl-names = "default", "high_speed"; pinctrl-0 = <&spi0_clk &spi0_tx &spi0_rx &spi0_cs0 &spi0_cs1>; + pinctrl-1 = <&spi0_clk_h &spi0_tx_h &spi0_rx_h &spi0_cs0_h &spi0_cs1_h>; #address-cells = <1>; spidev@0 { @@ -659,8 +660,9 @@ &spi2 { status = "okay"; max-freq = <50000000>; - pinctrl-names = "default"; + pinctrl-names = "default", "high_speed"; pinctrl-0 = <&spi2_clk &spi2_tx &spi2_rx &spi2_cs0 &spi2_cs1>; + pinctrl-1 = <&spi2_clk_h &spi2_tx_h &spi2_rx_h &spi2_cs0_h &spi2_cs1_h>; #address-cells = <1>; spidev@0 { _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
