Re: [PATCH net-next v2 5/5] net-next: dsa: add dsa support for Mediatek MT7530 switch
From: Sean Wang <hidden>
Date: 2017-03-28 06:50:27
Also in:
linux-devicetree, linux-mediatek, lkml
Hi Andrew On Fri, 2017-03-24 at 15:19 +0100, Andrew Lunn wrote:
On Tue, Mar 21, 2017 at 05:35:10PM +0800, sean.wang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org wrote: Hi Seanquoted
+ /* Lower Tx Driving */ + for (i = 0 ; i < 6 ; i++)Could MT7530_CPU_PORT be used here?
I should create meaningful definition instead of avoiding hard coding where 6 should be corrected into 5 which is meant for the number for control register to configure TRGMII path
quoted
+ mt7530_write(priv, MT7530_TRGMII_TD_ODT(i), + TD_DM_DRVP(8) | TD_DM_DRVN(8)); + + /* Setup MT7530 core clock */ + if (!trgint) { + /* Disable MT7530 core clock */ + core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); + + /* Disable MT7530 PLL, since phy_device has not yet been + * created when this function is called. So we provide + * core_write_mmd_indirect to complete this function + */ + core_write_mmd_indirect(priv, + CORE_GSWPLL_GRP1, + MDIO_MMD_VEND2, + 0); + + /* Setup MT7530 core clock into 500Mhz */ + core_write(priv, CORE_GSWPLL_GRP2, + RG_GSWPLL_POSDIV_500M(1) | + RG_GSWPLL_FBKDIV_500M(25)); + + /* Enable MT7530 PLL */ + core_write(priv, CORE_GSWPLL_GRP1, + RG_GSWPLL_EN_PRE | + RG_GSWPLL_POSDIV_200M(2) | + RG_GSWPLL_FBKDIV_200M(32)); + + /* Enable MT7530 core clock */ + core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); + } + + /* Setup the MT7530 TRGMII Tx Clock */ + core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); + core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1)); + core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0)); + core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta)); + core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta)); + core_write(priv, CORE_PLL_GROUP4, + RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN | + RG_SYSPLL_BIAS_LPF_EN); + core_write(priv, CORE_PLL_GROUP2, + RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN | + RG_SYSPLL_POSDIV(1)); + core_write(priv, CORE_PLL_GROUP7, + RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) | + RG_LCDDS_PWDB | RG_LCDDS_ISO_EN); + core_set(priv, CORE_TRGMII_GSW_CLK_CG, + REG_GSWCK_EN | REG_TRGMIICK_EN); + + if (!trgint) + for (i = 0 ; i < 5 ; i++)Why only 5 here? All other similar loops are to 6. Replacing 5 with a #define might help make this more readable.
the same as above, it should be corrected
quoted
+ mt7530_rmw(priv, MT7530_TRGMII_RD(i), + RD_TAP_MASK, RD_TAP(16)); + else + mt7623_trgmii_set(priv, GSW_INTF_MODE, INTF_MODE_TRGMII); + + return 0; +} + +static int +mt7623_pad_clk_setup(struct dsa_switch *ds) +{ + struct mt7530_priv *priv = ds->priv; + int i; + + for (i = 0 ; i < 6; i++)MT7530_CPU_PORT?
the same as above , it should be corrected
quoted
+ +/* Registers to mac forward conrol for unknown frames *//conrol/control
will fix it up
quoted
+ +/* Registor for port control */Register
will fix it up
quoted
+/* Regiser for TOP signal control */Register
will fix it up
quoted
+/* struct mt7530_priv - This is the main datasructure for holding the statedata structurequoted
+ * of the driver + * @dev: The device pointer + * @ds: The pointer to the dsa core structure + * @bus: The bus used for the device and built-in PHY + * @ethsys: The regmap used for enabling the necessary PLL + * @ethernet: The regmap used for access TRGMII-based registers + * @core_pwr: The power supplied into the core + * @io_pwr: The power supplied into the I/O + * @mcm: Flag for distinguishing if standalone IC or module + * coupling + * @reset: The descriptor for GPIO line tied to its reset pin + * @phy_mode: The xMII for cpu port used + * @ports: Holding the state amongs portsamong
will fix it up thank for your careful reviewing again!!
Andrew
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