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This adds device specific data support. Signed-off-by: Kever Yang Signed-off-by: William Wu Signed-off-by: Frank Wang Reviewed-by: Heiko Stuebner --- Changelog: v3: - add detail commit contents. - using FIELD_PREP() instead of bit shift. - leave a blank line after each switch break case. v2: - using constants macro instead of magic values. - add more comments for PHY tuning operations. v1: - https://patchwork.kernel.org/project/linux-phy/patch/20241015013351.4884-2-frawang.cn@gmail.com/ .../rockchip/phy-rockchip-naneng-combphy.c | 279 ++++++++++++++++++ 1 file changed, 279 insertions(+) diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c index 0a9989e41237f..eceb798567859 100644 --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c @@ -37,6 +37,10 @@ #define PHYREG8 0x1C #define PHYREG8_SSC_EN BIT(4) +#define PHYREG10 0x24 +#define PHYREG10_SSC_PCM_MASK GENMASK(3, 0) +#define PHYREG10_SSC_PCM_3500PPM 7 + #define PHYREG11 0x28 #define PHYREG11_SU_TRIM_0_7 0xF0 @@ -61,17 +65,26 @@ #define PHYREG16 0x3C #define PHYREG16_SSC_CNT_VALUE 0x5f +#define PHYREG17 0x40 + #define PHYREG18 0x44 #define PHYREG18_PLL_LOOP 0x32 +#define PHYREG21 0x50 +#define PHYREG21_RX_SQUELCH_VAL 0x0D + #define PHYREG27 0x6C #define PHYREG27_RX_TRIM_RK3588 0x4C +#define PHYREG30 0x74 + #define PHYREG32 0x7C #define PHYREG32_SSC_MASK GENMASK(7, 4) +#define PHYREG32_SSC_DIR_MASK GENMASK(5, 4) #define PHYREG32_SSC_DIR_SHIFT 4 #define PHYREG32_SSC_UPWARD 0 #define PHYREG32_SSC_DOWNWARD 1 +#define PHYREG32_SSC_OFFSET_MASK GENMASK(7, 6) #define PHYREG32_SSC_OFFSET_SHIFT 6 #define PHYREG32_SSC_OFFSET_500PPM 1 @@ -79,6 +92,7 @@ #define PHYREG33_PLL_KVCO_MASK GENMASK(4, 2) #define PHYREG33_PLL_KVCO_SHIFT 2 #define PHYREG33_PLL_KVCO_VALUE 2 +#define PHYREG33_PLL_KVCO_VALUE_RK3576 4 struct rockchip_combphy_priv; @@ -98,6 +112,7 @@ struct rockchip_combphy_grfcfg { struct combphy_reg pipe_rxterm_set; struct combphy_reg pipe_txelec_set; struct combphy_reg pipe_txcomp_set; + struct combphy_reg pipe_clk_24m; struct combphy_reg pipe_clk_25m; struct combphy_reg pipe_clk_100m; struct combphy_reg pipe_phymode_sel; @@ -584,6 +599,266 @@ static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = { .combphy_cfg = rk3568_combphy_cfg, }; +static int rk3576_combphy_cfg(struct rockchip_combphy_priv *priv) +{ + const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg; + unsigned long rate; + u32 val; + + switch (priv->type) { + case PHY_TYPE_PCIE: + /* Set SSC downward spread spectrum */ + val = FIELD_PREP(PHYREG32_SSC_MASK, PHYREG32_SSC_DOWNWARD); + rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, val, PHYREG32); + + rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_pcie, true); + rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_pcie, true); + rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_pcie, true); + rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_pcie, true); + break; + + case PHY_TYPE_USB3: + /* Set SSC downward spread spectrum */ + val = FIELD_PREP(PHYREG32_SSC_MASK, PHYREG32_SSC_DOWNWARD); + rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, val, PHYREG32); + + /* Enable adaptive CTLE for USB3.0 Rx */ + val = readl(priv->mmio + PHYREG15); + val |= PHYREG15_CTLE_EN; + writel(val, priv->mmio + PHYREG15); + + /* Set PLL KVCO fine tuning signals */ + rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK, BIT(3), PHYREG33); + + /* Set PLL LPF R1 to su_trim[10:7]=1001 */ + writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12); + + /* Set PLL input clock divider 1/2 */ + val = FIELD_PREP(PHYREG6_PLL_DIV_MASK, PHYREG6_PLL_DIV_2); + rockchip_combphy_updatel(priv, PHYREG6_PLL_DIV_MASK, val, PHYREG6); + + /* Set PLL loop divider */ + writel(PHYREG18_PLL_LOOP, priv->mmio + PHYREG18); + + /* Set PLL KVCO to min and set PLL charge pump current to max */ + writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11); + + /* Set Rx squelch input filler bandwidth */ + writel(PHYREG21_RX_SQUELCH_VAL, priv->mmio + PHYREG21); + + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false); + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false); + rockchip_combphy_param_write(priv->phy_grf, &cfg->usb_mode_set, true); + break; + + case PHY_TYPE_SATA: + /* Enable adaptive CTLE for SATA Rx */ + val = readl(priv->mmio + PHYREG15); + val |= PHYREG15_CTLE_EN; + writel(val, priv->mmio + PHYREG15); + + /* Set tx_rterm = 50 ohm and rx_rterm = 43.5 ohm */ + val = PHYREG7_TX_RTERM_50OHM << PHYREG7_TX_RTERM_SHIFT; + val |= PHYREG7_RX_RTERM_44OHM << PHYREG7_RX_RTERM_SHIFT; + writel(val, priv->mmio + PHYREG7); + + rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_sata, true); + rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_sata, true); + rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_sata, true); + rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_sata, true); + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con0_for_sata, true); + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con1_for_sata, true); + break; + + default: + dev_err(priv->dev, "incompatible PHY type\n"); + return -EINVAL; + } + + rate = clk_get_rate(priv->refclk); + + switch (rate) { + case REF_CLOCK_24MHz: + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_24m, true); + if (priv->type == PHY_TYPE_USB3 || priv->type == PHY_TYPE_SATA) { + /* Set ssc_cnt[9:0]=0101111101 & 31.5KHz */ + val = FIELD_PREP(PHYREG15_SSC_CNT_MASK, PHYREG15_SSC_CNT_VALUE); + rockchip_combphy_updatel(priv, PHYREG15_SSC_CNT_MASK, + val, PHYREG15); + + writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16); + } else if (priv->type == PHY_TYPE_PCIE) { + /* PLL KVCO tuning fine */ + val = FIELD_PREP(PHYREG33_PLL_KVCO_MASK, PHYREG33_PLL_KVCO_VALUE_RK3576); + rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK, + val, PHYREG33); + + /* Set up rx_pck invert and rx msb to disable */ + writel(0x00, priv->mmio + PHYREG27); + + /* + * Set up SU adjust signal: + * su_trim[7:0], PLL KVCO adjust bits[2:0] to min + * su_trim[15:8], PLL LPF R1 adujst bits[9:7]=3'b011 + * su_trim[31:24], CKDRV adjust + */ + writel(0x90, priv->mmio + PHYREG11); + writel(0x02, priv->mmio + PHYREG12); + writel(0x57, priv->mmio + PHYREG14); + + writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16); + } + break; + + case REF_CLOCK_25MHz: + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_25m, true); + break; + + case REF_CLOCK_100MHz: + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_100m, true); + if (priv->type == PHY_TYPE_PCIE) { + /* gate_tx_pck_sel length select work for L1SS */ + writel(0xc0, priv->mmio + PHYREG30); + + /* PLL KVCO tuning fine */ + val = FIELD_PREP(PHYREG33_PLL_KVCO_MASK, PHYREG33_PLL_KVCO_VALUE_RK3576); + rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK, + val, PHYREG33); + + /* Set up rx_trim: PLL LPF C1 85pf R1 1.25kohm */ + writel(0x4c, priv->mmio + PHYREG27); + + /* + * Set up SU adjust signal: + * su_trim[7:0], PLL KVCO adjust bits[2:0] to min + * su_trim[15:8], bypass PLL loop divider code, and + * PLL LPF R1 adujst bits[9:7]=3'b101 + * su_trim[23:16], CKRCV adjust + * su_trim[31:24], CKDRV adjust + */ + writel(0x90, priv->mmio + PHYREG11); + writel(0x43, priv->mmio + PHYREG12); + writel(0x88, priv->mmio + PHYREG13); + writel(0x56, priv->mmio + PHYREG14); + } else if (priv->type == PHY_TYPE_SATA) { + /* downward spread spectrum +500ppm */ + val = FIELD_PREP(PHYREG32_SSC_DIR_MASK, PHYREG32_SSC_DOWNWARD); + val |= FIELD_PREP(PHYREG32_SSC_OFFSET_MASK, PHYREG32_SSC_OFFSET_500PPM); + rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, val, PHYREG32); + + /* ssc ppm adjust to 3500ppm */ + rockchip_combphy_updatel(priv, PHYREG10_SSC_PCM_MASK, + PHYREG10_SSC_PCM_3500PPM, + PHYREG10); + } + break; + + default: + dev_err(priv->dev, "Unsupported rate: %lu\n", rate); + return -EINVAL; + } + + if (priv->ext_refclk) { + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_ext, true); + if (priv->type == PHY_TYPE_PCIE && rate == REF_CLOCK_100MHz) { + val = FIELD_PREP(PHYREG33_PLL_KVCO_MASK, PHYREG33_PLL_KVCO_VALUE_RK3576); + rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK, + val, PHYREG33); + + /* Set up rx_trim: PLL LPF C1 85pf R1 2.5kohm */ + writel(0x0c, priv->mmio + PHYREG27); + + /* + * Set up SU adjust signal: + * su_trim[7:0], PLL KVCO adjust bits[2:0] to min + * su_trim[15:8], bypass PLL loop divider code, and + * PLL LPF R1 adujst bits[9:7]=3'b101. + * su_trim[23:16], CKRCV adjust + * su_trim[31:24], CKDRV adjust + */ + writel(0x90, priv->mmio + PHYREG11); + writel(0x43, priv->mmio + PHYREG12); + writel(0x88, priv->mmio + PHYREG13); + writel(0x56, priv->mmio + PHYREG14); + } + } + + if (priv->enable_ssc) { + val = readl(priv->mmio + PHYREG8); + val |= PHYREG8_SSC_EN; + writel(val, priv->mmio + PHYREG8); + + if (priv->type == PHY_TYPE_PCIE && rate == REF_CLOCK_24MHz) { + /* Set PLL loop divider */ + writel(0x00, priv->mmio + PHYREG17); + writel(PHYREG18_PLL_LOOP, priv->mmio + PHYREG18); + + /* Set up rx_pck invert and rx msb to disable */ + writel(0x00, priv->mmio + PHYREG27); + + /* + * Set up SU adjust signal: + * su_trim[7:0], PLL KVCO adjust bits[2:0] to min + * su_trim[15:8], PLL LPF R1 adujst bits[9:7]=3'b101 + * su_trim[23:16], CKRCV adjust + * su_trim[31:24], CKDRV adjust + */ + writel(0x90, priv->mmio + PHYREG11); + writel(0x02, priv->mmio + PHYREG12); + writel(0x08, priv->mmio + PHYREG13); + writel(0x57, priv->mmio + PHYREG14); + writel(0x40, priv->mmio + PHYREG15); + + writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16); + + val = FIELD_PREP(PHYREG33_PLL_KVCO_MASK, PHYREG33_PLL_KVCO_VALUE_RK3576); + writel(val, priv->mmio + PHYREG33); + } + } + + return 0; +} + +static const struct rockchip_combphy_grfcfg rk3576_combphy_grfcfgs = { + /* pipe-phy-grf */ + .pcie_mode_set = { 0x0000, 5, 0, 0x00, 0x11 }, + .usb_mode_set = { 0x0000, 5, 0, 0x00, 0x04 }, + .pipe_rxterm_set = { 0x0000, 12, 12, 0x00, 0x01 }, + .pipe_txelec_set = { 0x0004, 1, 1, 0x00, 0x01 }, + .pipe_txcomp_set = { 0x0004, 4, 4, 0x00, 0x01 }, + .pipe_clk_24m = { 0x0004, 14, 13, 0x00, 0x00 }, + .pipe_clk_25m = { 0x0004, 14, 13, 0x00, 0x01 }, + .pipe_clk_100m = { 0x0004, 14, 13, 0x00, 0x02 }, + .pipe_phymode_sel = { 0x0008, 1, 1, 0x00, 0x01 }, + .pipe_rate_sel = { 0x0008, 2, 2, 0x00, 0x01 }, + .pipe_rxterm_sel = { 0x0008, 8, 8, 0x00, 0x01 }, + .pipe_txelec_sel = { 0x0008, 12, 12, 0x00, 0x01 }, + .pipe_txcomp_sel = { 0x0008, 15, 15, 0x00, 0x01 }, + .pipe_clk_ext = { 0x000c, 9, 8, 0x02, 0x01 }, + .pipe_phy_status = { 0x0034, 6, 6, 0x01, 0x00 }, + .con0_for_pcie = { 0x0000, 15, 0, 0x00, 0x1000 }, + .con1_for_pcie = { 0x0004, 15, 0, 0x00, 0x0000 }, + .con2_for_pcie = { 0x0008, 15, 0, 0x00, 0x0101 }, + .con3_for_pcie = { 0x000c, 15, 0, 0x00, 0x0200 }, + .con0_for_sata = { 0x0000, 15, 0, 0x00, 0x0129 }, + .con1_for_sata = { 0x0004, 15, 0, 0x00, 0x0000 }, + .con2_for_sata = { 0x0008, 15, 0, 0x00, 0x80c1 }, + .con3_for_sata = { 0x000c, 15, 0, 0x00, 0x0407 }, + /* php-grf */ + .pipe_con0_for_sata = { 0x001C, 2, 0, 0x00, 0x2 }, + .pipe_con1_for_sata = { 0x0020, 2, 0, 0x00, 0x2 }, +}; + +static const struct rockchip_combphy_cfg rk3576_combphy_cfgs = { + .num_phys = 2, + .phy_ids = { + 0x2b050000, + 0x2b060000 + }, + .grfcfg = &rk3576_combphy_grfcfgs, + .combphy_cfg = rk3576_combphy_cfg, +}; + static int rk3588_combphy_cfg(struct rockchip_combphy_priv *priv) { const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg; @@ -775,6 +1050,10 @@ static const struct of_device_id rockchip_combphy_of_match[] = { .compatible = "rockchip,rk3568-naneng-combphy", .data = &rk3568_combphy_cfgs, }, + { + .compatible = "rockchip,rk3576-naneng-combphy", + .data = &rk3576_combphy_cfgs, + }, { .compatible = "rockchip,rk3588-naneng-combphy", .data = &rk3588_combphy_cfgs,