Thread (24 messages) 24 messages, 6 authors, 2017-03-28

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 Sean
quoted
+	/* 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 state
data structure
quoted
+ *			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 ports
among
will fix it up

thank for your careful reviewing again!!


	Andrew

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