Implement dma_get_cfg() interface to pass flow id information for DMA clients to use. This is needed because on K3 SoCs, CPSW (ethernet) and UDMA (DMA provider) support "flows" within a given RX DMA channel. This allows different network packets to be segregated while using same RX DMA channel. In order for basic ethernet to work, CPSW slave must be aware of the flow ID allocated for the RX channel by the DMA driver. This interface allows CPSW to query flow ID from DMA provider and configure it in CPSW HW.

Signed-off-by: Vignesh Raghavendra vigneshr@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com --- drivers/dma/ti/k3-udma.c | 28 ++++++++++++++++++++++++++++ include/linux/soc/ti/ti-udma.h | 19 +++++++++++++++++++ 2 files changed, 47 insertions(+)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index def3c5c38c66..36bf349a8579 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -103,6 +103,8 @@ struct udma_chan { struct udma_rchan *rchan; struct udma_rflow *rflow;

+ struct ti_udma_drv_chan_cfg_data cfg_data; + u32 bcnt; /* number of bytes completed since the start of the channel */

bool pkt_mode; /* TR or packet */ @@ -1521,6 +1523,11 @@ static int udma_request(struct dma *dma) uc->desc_rx_cur = 0; uc->num_rx_bufs = 0;

+ if (uc->dir == DMA_DEV_TO_MEM) { + uc->cfg_data.flow_id_base = uc->rflow->id; + uc->cfg_data.flow_id_cnt = 1; + } + return 0; }

@@ -1795,6 +1802,26 @@ int udma_prepare_rcv_buf(struct dma *dma, void *dst, size_t size) return 0; }

+static int udma_get_cfg(struct dma *dma, u32 id, void **data) +{ + struct udma_dev *ud = dev_get_priv(dma->dev); + struct udma_chan *uc; + + if (dma->id >= (ud->rchan_cnt + ud->tchan_cnt)) { + dev_err(dma->dev, "invalid dma ch_id %lu\n", dma->id); + return -EINVAL; + } + + switch (id) { + case TI_UDMA_CHAN_PRIV_INFO: + uc = &ud->channels[dma->id]; + *data = &uc->cfg_data; + return 0; + } + + return -EINVAL; +} + static const struct dma_ops udma_ops = { .transfer = udma_transfer, .of_xlate = udma_of_xlate, @@ -1805,6 +1832,7 @@ static const struct dma_ops udma_ops = { .send = udma_send, .receive = udma_receive, .prepare_rcv_buf = udma_prepare_rcv_buf, + .get_cfg = udma_get_cfg, };

static const struct udevice_id udma_ids[] = { diff --git a/include/linux/soc/ti/ti-udma.h b/include/linux/soc/ti/ti-udma.h index e9d4226c48d9..04e354fb2d69 100644 --- a/include/linux/soc/ti/ti-udma.h +++ b/include/linux/soc/ti/ti-udma.h @@ -21,4 +21,23 @@ struct ti_udma_drv_packet_data { u32 dest_tag; };

+/** + * struct ti_udma_drv_chan_cfg_data - TI UDMA per channel specific + * configuration data + * + * @flow_id_base: Start index of flow ID allocated to this channel + * @flow_id_cnt: Number of flows allocated for this channel starting at + * flow_id_base + * + * TI UDMA channel specific data returned as part of dma_get_cfg() call + * from the DMA client driver. + */ +struct ti_udma_drv_chan_cfg_data { + u32 flow_id_base; + u32 flow_id_cnt; +}; + +/* TI UDMA specific flag IDs for dma_get_cfg() call */ +#define TI_UDMA_CHAN_PRIV_INFO 0 + #endif /* __TI_UDMA_H */

Add DT nodes related to DMA and CPSW to -u-boot.dtsi to get networking up on J721e EVM.

Signed-off-by: Vignesh Raghavendra vigneshr@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com --- .../k3-j721e-common-proc-board-u-boot.dtsi | 239 ++++++++++++++++++ 1 file changed, 239 insertions(+)

diff --git a/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi b/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi index 541da22c4889..f3857b9100bb 100644 --- a/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi +++ b/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi @@ -3,11 +3,18 @@ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ */

+#include <dt-bindings/dma/k3-udma.h> +#include <dt-bindings/net/ti-dp83867.h> + / { chosen { stdout-path = "serial2:115200n8"; tick-timer = &timer1; }; + + aliases { + ethernet0 = &cpsw_port1; + }; };

&cbass_main{ @@ -24,6 +31,184 @@ clock-frequency = <25000000>; u-boot,dm-spl; }; + + mcu_conf: scm_conf@40f00000 { + compatible = "syscon", "simple-mfd"; + reg = <0x0 0x40f00000 0x0 0x20000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x0 0x40f00000 0x20000>; + + phy_sel: cpsw-phy-sel@4040 { + compatible = "ti,am654-cpsw-phy-sel"; + reg = <0x4040 0x4>; + reg-names = "gmii-sel"; + }; + }; + + cbass_mcu_navss: mcu_navss { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <2>; + dma-coherent; + dma-ranges; + ranges; + + ti,sci-dev-id = <232>; + u-boot,dm-spl; + + mcu_ringacc: ringacc@2b800000 { + compatible = "ti,am654-navss-ringacc"; + reg = <0x0 0x2b800000 0x0 0x400000>, + <0x0 0x2b000000 0x0 0x400000>, + <0x0 0x28590000 0x0 0x100>, + <0x0 0x2a500000 0x0 0x40000>; + reg-names = "rt", "fifos", "proxy_gcfg", "proxy_target"; + ti,num-rings = <286>; + ti,sci-rm-range-gp-rings = <0x1>; /* GP ring range */ + ti,sci = <&dmsc>; + ti,sci-dev-id = <235>; + u-boot,dm-spl; + }; + + mcu_udmap: udmap@31150000 { + compatible = "ti,j721e-navss-mcu-udmap"; + reg = <0x0 0x285c0000 0x0 0x100>, + <0x0 0x2a800000 0x0 0x40000>, + <0x0 0x2aa00000 0x0 0x40000>; + reg-names = "gcfg", "rchanrt", "tchanrt"; + #dma-cells = <3>; + + ti,ringacc = <&mcu_ringacc>; + ti,psil-base = <0x6000>; + + ti,sci = <&dmsc>; + ti,sci-dev-id = <236>; + + ti,sci-rm-range-tchan = <0x0d>, /* TX_CHAN */ + <0x0f>; /* TX_HCHAN */ + ti,sci-rm-range-rchan = <0x0a>, /* RX_CHAN */ + <0x0b>; /* RX_HCHAN */ + ti,sci-rm-range-rflow = <0x00>; /* GP RFLOW */ + u-boot,dm-spl; + }; + }; + + mcu_cpsw: ethernet@046000000 { + compatible = "ti,j721e-cpsw-nuss"; + #address-cells = <2>; + #size-cells = <2>; + reg = <0x0 0x46000000 0x0 0x200000>; + reg-names = "cpsw_nuss"; + ranges; + dma-coherent; + clocks = <&k3_clks 18 22>; + clock-names = "fck"; + power-domains = <&k3_pds 18 TI_SCI_PD_EXCLUSIVE>; + ti,psil-base = <0x7000>; + cpsw-phy-sel = <&phy_sel>; + + dmas = <&mcu_udmap &mcu_cpsw 0 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 1 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 2 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 3 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 4 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 5 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 6 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 7 UDMA_DIR_TX>, + <&mcu_udmap &mcu_cpsw 0 UDMA_DIR_RX>; + dma-names = "tx0", "tx1", "tx2", "tx3", + "tx4", "tx5", "tx6", "tx7", + "rx"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + host: host@0 { + reg = <0>; + ti,label = "host"; + }; + + cpsw_port1: port@1 { + reg = <1>; + ti,mac-only; + ti,label = "port1"; + ti,syscon-efuse = <&mcu_conf 0x200>; + }; + }; + + davinci_mdio: mdio { + #address-cells = <1>; + #size-cells = <0>; + bus_freq = <1000000>; + }; + + cpts { + clocks = <&k3_clks 18 2>; + clock-names = "cpts"; + interrupts-extended = <&gic500 GIC_SPI 858 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "cpts"; + ti,cpts-ext-ts-inputs = <4>; + ti,cpts-periodic-outputs = <2>; + }; + + ti,psil-config0 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config1 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config2 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config3 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config4 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config5 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config6 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + + ti,psil-config7 { + linux,udma-mode = <UDMA_PKT_MODE>; + statictr-type = <PSIL_STATIC_TR_NONE>; + ti,needs-epib; + ti,psd-size = <16>; + }; + }; };

&secure_proxy_main { @@ -52,6 +237,29 @@

&wkup_pmx0 { u-boot,dm-spl; + mcu_cpsw_pins_default: mcu_cpsw_pins_default { + pinctrl-single,pins = < + J721E_WKUP_IOPAD(0x0058, PIN_OUTPUT, 0) /* (N4) MCU_RGMII1_TX_CTL */ + J721E_WKUP_IOPAD(0x005c, PIN_INPUT, 0) /* (N5) MCU_RGMII1_RX_CTL */ + J721E_WKUP_IOPAD(0x0060, PIN_OUTPUT, 0) /* (M2) MCU_RGMII1_TD3 */ + J721E_WKUP_IOPAD(0x0064, PIN_OUTPUT, 0) /* (M3) MCU_RGMII1_TD2 */ + J721E_WKUP_IOPAD(0x0068, PIN_OUTPUT, 0) /* (M4) MCU_RGMII1_TD1 */ + J721E_WKUP_IOPAD(0x006c, PIN_OUTPUT, 0) /* (M5) MCU_RGMII1_TD0 */ + J721E_WKUP_IOPAD(0x0078, PIN_INPUT, 0) /* (L2) MCU_RGMII1_RD3 */ + J721E_WKUP_IOPAD(0x007c, PIN_INPUT, 0) /* (L5) MCU_RGMII1_RD2 */ + J721E_WKUP_IOPAD(0x0080, PIN_INPUT, 0) /* (M6) MCU_RGMII1_RD1 */ + J721E_WKUP_IOPAD(0x0084, PIN_INPUT, 0) /* (L6) MCU_RGMII1_RD0 */ + J721E_WKUP_IOPAD(0x0070, PIN_INPUT, 0) /* (N1) MCU_RGMII1_TXC */ + J721E_WKUP_IOPAD(0x0074, PIN_INPUT, 0) /* (M1) MCU_RGMII1_RXC */ + >; + }; + + mcu_mdio_pins_default: mcu_mdio1_pins_default { + pinctrl-single,pins = < + J721E_WKUP_IOPAD(0x008c, PIN_OUTPUT, 0) /* (L1) MCU_MDIO0_MDC */ + J721E_WKUP_IOPAD(0x0088, PIN_INPUT, 0) /* (L4) MCU_MDIO0_MDIO */ + >; + }; };

&main_pmx0 { @@ -73,3 +281,34 @@ &main_sdhci1 { u-boot,dm-spl; }; + +&mcu_cpsw { + pinctrl-names = "default"; + pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>; +}; + +&davinci_mdio { + phy0: ethernet-phy@0 { + reg = <0>; + /* TODO: phy reset: TCA9555RTWR(i2c:0x21)[p04].GPIO_MCU_RGMII_RSTN */ + ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>; + ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; + }; +}; + +&cpsw_port1 { + phy-mode = "rgmii-rxid"; + phy-handle = <&phy0>; +}; + +&mcu_cpsw { + reg = <0x0 0x46000000 0x0 0x200000>, + <0x0 0x40f00200 0x0 0x2>; + reg-names = "cpsw_nuss", "mac_efuse"; + + cpsw-phy-sel@40f04040 { + compatible = "ti,am654-cpsw-phy-sel"; + reg= <0x0 0x40f04040 0x0 0x4>; + reg-names = "gmii-sel"; + }; +};

Enable configs related to DMA and Ethernet so as to support networking at U-Boot prompt

Signed-off-by: Vignesh Raghavendra vigneshr@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com --- configs/j721e_evm_a72_defconfig | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/configs/j721e_evm_a72_defconfig b/configs/j721e_evm_a72_defconfig index 2112ce813be9..a73de0857734 100644 --- a/configs/j721e_evm_a72_defconfig +++ b/configs/j721e_evm_a72_defconfig @@ -51,6 +51,7 @@ CONFIG_DEFAULT_DEVICE_TREE="k3-j721e-common-proc-board" CONFIG_SPL_MULTI_DTB_FIT=y CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y CONFIG_SYS_RELOC_GD_ENV_ADDR=y +CONFIG_NET_RANDOM_ETHADDR=y CONFIG_DM=y CONFIG_SPL_DM=y CONFIG_SPL_DM_SEQ_ALIAS=y @@ -61,6 +62,8 @@ CONFIG_SPL_OF_TRANSLATE=y CONFIG_CLK=y CONFIG_SPL_CLK=y CONFIG_CLK_TI_SCI=y +CONFIG_DMA_CHANNELS=y +CONFIG_TI_K3_NAVSS_UDMA=y CONFIG_TI_SCI_PROTOCOL=y CONFIG_DM_MAILBOX=y CONFIG_K3_SEC_PROXY=y @@ -79,6 +82,10 @@ CONFIG_SYS_FLASH_CFI=y CONFIG_HBMC_AM654=y CONFIG_DM_SPI_FLASH=y CONFIG_SPI_FLASH_STMICRO=y +CONFIG_PHY_TI=y +CONFIG_PHY_FIXED=y +CONFIG_DM_ETH=y +CONFIG_TI_AM65_CPSW_NUSS=y CONFIG_PINCTRL=y # CONFIG_PINCTRL_GENERIC is not set CONFIG_SPL_PINCTRL=y @@ -93,6 +100,7 @@ CONFIG_RESET_TI_SCI=y CONFIG_SCSI=y CONFIG_DM_SCSI=y CONFIG_DM_SERIAL=y +CONFIG_SOC_TI=y CONFIG_SPI=y CONFIG_DM_SPI=y CONFIG_CADENCE_QSPI=y