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-rw-r--r--recipes/u-boot/u-boot-git/omap3evm/0012-EMAC-driver-Implement-GPIO-driven-PHY-reset.patch319
1 files changed, 319 insertions, 0 deletions
diff --git a/recipes/u-boot/u-boot-git/omap3evm/0012-EMAC-driver-Implement-GPIO-driven-PHY-reset.patch b/recipes/u-boot/u-boot-git/omap3evm/0012-EMAC-driver-Implement-GPIO-driven-PHY-reset.patch
new file mode 100644
index 0000000000..4650ecba16
--- /dev/null
+++ b/recipes/u-boot/u-boot-git/omap3evm/0012-EMAC-driver-Implement-GPIO-driven-PHY-reset.patch
@@ -0,0 +1,319 @@
+From 2cd2cbb5b87695b85471ceecf314146de0dba77e Mon Sep 17 00:00:00 2001
+From: Sriram <srk@ti.com>
+Date: Thu, 18 Jun 2009 01:53:03 +0530
+Subject: [PATCH 12/16] EMAC driver: Implement GPIO driven PHY reset.
+
+---
+ board/omap3/omap3517evm/omap3517evm.c | 33 ++++++++++-
+ board/omap3/omap3517evm/omap3517evm.h | 6 +-
+ drivers/net/ticpgmac.c | 104 ++++++++++++++++++++++++++++++---
+ include/asm-arm/arch-omap3/mux.h | 1 +
+ include/asm-arm/arch-omap3/ticpgmac.h | 17 +++++
+ 5 files changed, 149 insertions(+), 12 deletions(-)
+
+diff --git a/board/omap3/omap3517evm/omap3517evm.c b/board/omap3/omap3517evm/omap3517evm.c
+index bf304e3..0f8dc74 100644
+--- a/board/omap3/omap3517evm/omap3517evm.c
++++ b/board/omap3/omap3517evm/omap3517evm.c
+@@ -65,7 +65,8 @@ int misc_init_r(void)
+ #endif
+
+ #if defined(CONFIG_CMD_NET)
+- //setup_net_chip();
++ /* Drive the PHY reset thru GPIO 30 */
++ setup_net_chip();
+ if (!eth_hw_init()) {
+ printf("error:Ethernet init failed\n");
+ }
+@@ -95,6 +96,7 @@ void set_muxconf_regs(void)
+ *****************************************************************************/
+ static void setup_net_chip(void)
+ {
++ #if 0
+ gpio_t *gpio3_base = (gpio_t *)OMAP34XX_GPIO3_BASE;
+ gpmc_csx_t *gpmc_cs6_base = (gpmc_csx_t *)GPMC_CONFIG_CS6_BASE;
+ ctrl_t *ctrl_base = (ctrl_t *)OMAP34XX_CTRL_BASE;
+@@ -125,4 +127,33 @@ static void setup_net_chip(void)
+ writel(GPIO0, &gpio3_base->cleardataout);
+ udelay(1);
+ writel(GPIO0, &gpio3_base->setdataout);
++ #else
++ volatile unsigned int ctr;
++
++ gpio_t *gpio1_base = (gpio_t *)OMAP34XX_GPIO1_BASE;
++ ctrl_t *ctrl_base = (ctrl_t *)OMAP34XX_CTRL_BASE;
++
++
++ /* Make GPIO 30 as output pin */
++ writel(readl(&gpio1_base->oe) & ~(GPIO30), &gpio1_base->oe);
++
++ /* Now send a pulse on the GPIO pin */
++ printf("Driving GPIO 30 low \n");
++ writel(GPIO30, &gpio1_base->cleardataout);
++ ctr = 0;
++ do{
++ udelay(1000);
++ ctr++;
++ }while (ctr <300);
++
++ printf("Driving GPIO 30 high \n");
++ writel(GPIO30, &gpio1_base->setdataout);
++ ctr =0;
++ /* allow the PHY to stabilize and settle down */
++ do{
++ udelay(1000);
++ ctr++;
++ }while (ctr <300);
++
++ #endif
+ }
+diff --git a/board/omap3/omap3517evm/omap3517evm.h b/board/omap3/omap3517evm/omap3517evm.h
+index 65276b8..074d4ff 100644
+--- a/board/omap3/omap3517evm/omap3517evm.h
++++ b/board/omap3/omap3517evm/omap3517evm.h
+@@ -287,6 +287,8 @@ static void setup_net_chip(void);
+ MUX_VAL(CP(SYS_32K), (IEN | PTD | DIS | M0)) /*SYS_32K*/\
+ MUX_VAL(CP(SYS_CLKREQ), (IEN | PTD | DIS | M0)) /*SYS_CLKREQ*/\
+ MUX_VAL(CP(SYS_NIRQ), (IEN | PTU | EN | M0)) /*SYS_nIRQ*/\
++ MUX_VAL(CP(SYS_NRESWARM), (IDIS | PTU | DIS | M4)) /*SYS_nRESWARM */\
++ /* GPIO 30 */\
+ MUX_VAL(CP(SYS_BOOT0), (IEN | PTD | DIS | M4)) /*GPIO_2*/\
+ /* - PEN_IRQ */\
+ MUX_VAL(CP(SYS_BOOT1), (IEN | PTD | DIS | M4)) /*GPIO_3 */\
+@@ -337,8 +339,8 @@ static void setup_net_chip(void);
+ MUX_VAL(CP(CCDC_DATA5), (IEN | PTD | EN | M0)) /*ccdc_data5*/\
+ MUX_VAL(CP(CCDC_DATA6), (IEN | PTD | EN | M0)) /*ccdc_data6*/\
+ MUX_VAL(CP(CCDC_DATA7), (IEN | PTD | EN | M0)) /*ccdc_data7*/\
+- MUX_VAL(CP(RMII_MDIO_DATA), (PTD | M0)) /*rmii_mdio_data*/\
+- MUX_VAL(CP(RMII_MDIO_CLK), (PTD | M0)) /*rmii_mdio_clk*/\
++ MUX_VAL(CP(RMII_MDIO_DATA), (IEN | M0)) /*rmii_mdio_data*/\
++ MUX_VAL(CP(RMII_MDIO_CLK), (M0)) /*rmii_mdio_clk*/\
+ MUX_VAL(CP(RMII_RXD0) , (IEN | PTD | M0)) /*rmii_rxd0*/\
+ MUX_VAL(CP(RMII_RXD1), (IEN | PTD | M0)) /*rmii_rxd1*/\
+ MUX_VAL(CP(RMII_CRS_DV), (IEN | PTD | M0)) /*rmii_crs_dv*/\
+diff --git a/drivers/net/ticpgmac.c b/drivers/net/ticpgmac.c
+index 350fb9b..eeff23b 100644
+--- a/drivers/net/ticpgmac.c
++++ b/drivers/net/ticpgmac.c
+@@ -268,26 +268,44 @@ STATIC int gen_is_phy_connected(int phy_addr)
+
+ STATIC int gen_get_link_status(int phy_addr)
+ {
+- u_int16_t tmp;
++ u_int16_t tmp,lpa_val,val;
+
+ if (cpgmac_eth_phy_read(phy_addr, MII_STATUS_REG, &tmp)
+ && (tmp & 0x04)) {
++ //printf("Phy %d MII_Status Reg=0x%x \n",phy_addr,tmp);
++ //printf("MACCTRL 0x%x\n",adap_emac->MACCONTROL);
+
++ cpgmac_eth_phy_read(phy_addr,MII_CTRL_REG,&val);
++ //printf("Phy CTRL=0x%x \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,ANEG_ADVERTISE_REG,&val);
++ // printf("Phy ANEG ADV=0x%x \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,ANEG_LPA_REG,&lpa_val);
++ //printf("Phy ANEG LPA=0x%x \n",lpa_val);
++
+ /* Speed doesn't matter, there is no setting for it in EMAC. */
+- if (tmp & GEN_PHY_STATUS_FD_MASK) {
++ //if (tmp & GEN_PHY_STATUS_FD_MASK) {
++ if (lpa_val & (GEN_PHY_ANEG_100DUP | GEN_PHY_ANEG_10DUP ) ) {
+ /* set EMAC for Full Duplex */
++ // printf("Set MACCTRL for full duplex \n");
+ adap_emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE |
+ EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
+ } else {
+ /*set EMAC for Half Duplex */
+ adap_emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
++ // printf("Set MACCTRL for HALF duplex \n");
+ }
+
+ #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
+- if(tmp & GEN_PHY_STATUS_SPEED100_MASK) {
++ //if(tmp & GEN_PHY_STATUS_SPEED100_MASK) {
++ if (lpa_val & (GEN_PHY_ANEG_100DUP | GEN_PHY_ANEG_100TX ) ) {
+ adap_emac->MACCONTROL |= EMAC_MACCONTROL_RMIISPEED_100;
++ // printf("Set maccontrol for RMII 100 - 0x%x\n",adap_emac->MACCONTROL);
++
+ } else {
+ adap_emac->MACCONTROL &= ~EMAC_MACCONTROL_RMIISPEED_100;
++ printf("Set maccontrol for RMII 10 - 0x%x\n",adap_emac->MACCONTROL);
+ }
+ #endif
+
+@@ -299,20 +317,62 @@ STATIC int gen_get_link_status(int phy_addr)
+
+ STATIC int gen_auto_negotiate(int phy_addr)
+ {
+- u_int16_t tmp;
++ u_int16_t tmp,val;
++ unsigned long cntr =0;
+
+ if (!cpgmac_eth_phy_read(phy_addr, PHY_BMCR, &tmp))
+ return(0);
+
++ printf("read BMCR 0x%x\n",tmp);
++
++ val = tmp | GEN_PHY_CTRL_DUP | GEN_PHY_CTRL_ENA_ANEG | GEN_PHY_CTRL_SPD_SEL ;
++ cpgmac_eth_phy_write(phy_addr, PHY_BMCR, val);
++ cpgmac_eth_phy_read(phy_addr, PHY_BMCR, &val);
++ printf("BMCR set to 0x%X \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,ANEG_ADVERTISE_REG, &val);
++ printf("read ANEG 0x%x \n",val);
++ val |= ( GEN_PHY_ANEG_100DUP | GEN_PHY_ANEG_100TX | GEN_PHY_ANEG_10DUP | GEN_PHY_ANEG_10TX );
++ printf("writing back 0x%x \n",val);
++ cpgmac_eth_phy_write(phy_addr, ANEG_ADVERTISE_REG, val);
++ cpgmac_eth_phy_read(phy_addr,ANEG_ADVERTISE_REG, &val);
++ printf("ANEG ADVT set to 0x%x \n", val);
++
++
++ printf("Restart Auto-negn \n");
++ cpgmac_eth_phy_read(phy_addr, PHY_BMCR, &tmp);
++
+ /* Restart Auto_negotiation */
+- tmp |= PHY_BMCR_AUTON;
++ tmp |= PHY_BMCR_RST_NEG;
++ printf("writing bk 0x%x to BMCR for anegn \n",tmp);
+ cpgmac_eth_phy_write(phy_addr, PHY_BMCR, tmp);
+
+ /*check AutoNegotiate complete */
+- udelay (10000);
++ //udelay (10000);
++ do{
++ udelay(40000);
++ cntr++;
++ }while(cntr < 150 );
++
+ if (!cpgmac_eth_phy_read(phy_addr, PHY_BMSR, &tmp))
+ return(0);
++ printf("BMSR after negn 0x%X\n",tmp);
+
++ cpgmac_eth_phy_read(phy_addr,MII_CTRL_REG,&val);
++ printf("Phy CTRL=0x%x \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,ANEG_ADVERTISE_REG,&val);
++ printf("Phy ANEG ADV=0x%x \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,ANEG_LPA_REG,&val);
++ printf("Phy ANEG LPA=0x%x \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,ANEG_EXP_REG,&val);
++ printf("Phy ANEG eXP=0x%x \n",val);
++
++ cpgmac_eth_phy_read(phy_addr,SPL_VEND_REG,&val);
++ printf("Phy SPL VEND =0x%x \n",val);
++
+ if (!(tmp & PHY_BMSR_AUTN_COMP))
+ return(0);
+
+@@ -324,16 +384,20 @@ STATIC int gen_auto_negotiate(int phy_addr)
+ #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ STATIC int cpgmac_mii_phy_read(char *devname, unsigned char addr, unsigned char reg, unsigned short *value)
+ {
++ printf("MII Phy read \n");
+ return(cpgmac_eth_phy_read(addr, reg, value) ? 0 : 1);
+ }
+
+ STATIC int cpgmac_mii_phy_write(char *devname, unsigned char addr, unsigned char reg, unsigned short value)
+ {
++
++ printf("MII Phy write \n");
+ return(cpgmac_eth_phy_write(addr, reg, value) ? 0 : 1);
+ }
+
+ int cpgmac_eth_miiphy_initialize(bd_t *bis)
+ {
++ printf("MIIPHY initialize \n");
+ miiphy_register(phy.name, cpgmac_mii_phy_read, cpgmac_mii_phy_write);
+
+ return(1);
+@@ -399,6 +463,28 @@ STATIC int cpgmac_eth_hw_init(void)
+
+ printf("Ethernet PHY: %s\n", phy.name);
+
++ /* Override HW configuration value that were latched */
++ cpgmac_eth_phy_read(active_phy_addr, SPL_VEND_REG, &tmp);
++ printf("read HW config for PHY 0x%x\n",tmp);
++// tmp |= (1 << 14) | ( 7 << 5) ;
++ tmp = 0x60e0;
++ printf("Program HW config as 0x%x \n",tmp);
++ cpgmac_eth_phy_write(active_phy_addr,SPL_VEND_REG,tmp);
++
++ /* Soft reset the PHY */
++ cpgmac_eth_phy_write(active_phy_addr, PHY_BMCR, (1 << 15));
++
++ active_phy_addr = 0;
++
++ do
++ {
++ cpgmac_eth_phy_read(active_phy_addr, PHY_BMCR , &tmp);
++
++ }while (tmp & (1 << 15));
++
++
++
++
+ return(1);
+ }
+
+@@ -505,7 +591,7 @@ STATIC int cpgmac_eth_open(void)
+ clkdiv = (EMAC_MDIO_BUS_FREQ / EMAC_MDIO_CLOCK_FREQ) - 1;
+ adap_mdio->CONTROL = ((clkdiv & 0xff) | MDIO_CONTROL_ENABLE | MDIO_CONTROL_FAULT);
+
+- if (!phy.get_link_status(active_phy_addr))
++ if (!phy.auto_negotiate(active_phy_addr))
+ return(0);
+
+ /* Start receive process */
+diff --git a/include/asm-arm/arch-omap3/mux.h b/include/asm-arm/arch-omap3/mux.h
+index d94eb2d..3e4a2ee 100644
+--- a/include/asm-arm/arch-omap3/mux.h
++++ b/include/asm-arm/arch-omap3/mux.h
+@@ -284,6 +284,7 @@
+ #define CONTROL_PADCONF_SYS_32K 0x0A04
+ #define CONTROL_PADCONF_SYS_CLKREQ 0x0A06
+ #define CONTROL_PADCONF_SYS_NIRQ 0x01E0
++#define CONTROL_PADCONF_SYS_NRESWARM 0x0A08
+ #define CONTROL_PADCONF_SYS_BOOT0 0x0A0A
+ #define CONTROL_PADCONF_SYS_BOOT1 0x0A0C
+ #define CONTROL_PADCONF_SYS_BOOT2 0x0A0E
+diff --git a/include/asm-arm/arch-omap3/ticpgmac.h b/include/asm-arm/arch-omap3/ticpgmac.h
+index 10ec187..2a7c886 100644
+--- a/include/asm-arm/arch-omap3/ticpgmac.h
++++ b/include/asm-arm/arch-omap3/ticpgmac.h
+@@ -81,7 +81,12 @@
+ #define EMAC_TEARDOWN_VALUE 0xfffffffc
+
+ /* MII Status Register */
++#define MII_CTRL_REG 0
+ #define MII_STATUS_REG 1
++#define ANEG_ADVERTISE_REG 4
++#define ANEG_LPA_REG 5
++#define ANEG_EXP_REG 6
++#define SPL_VEND_REG 18
+
+ /* Number of statistics registers */
+ #define EMAC_NUM_STATS 36
+@@ -339,4 +344,16 @@ typedef struct
+ #define GEN_PHY_STATUS_SPEED100_MASK ((1 << 13) | (1 << 14))
+ #define GEN_PHY_STATUS_FD_MASK ((1 << 11) | (1 << 13))
+
++#define GEN_PHY_ANEG_100DUP (1 << 8)
++#define GEN_PHY_ANEG_100TX (1 << 7)
++#define GEN_PHY_ANEG_10DUP (1 << 6)
++#define GEN_PHY_ANEG_10TX (1 << 5)
++
++#define GEN_PHY_CTRL_RST_ANEG (1 << 9)
++#define GEN_PHY_CTRL_DUP (1 << 8)
++#define GEN_PHY_CTRL_ENA_ANEG (1 << 12)
++#define GEN_PHY_CTRL_SPD_SEL (1 << 13)
++
++
++
+ #endif /* _TI_CPGMAC_H_ */
+--
+1.6.2.4
+
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-09-24 21:12:22 +0000