From 527f8049cd8db420e785450dda1eeaad2020ca5d Mon Sep 17 00:00:00 2001
From: juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 9 Sep 2012 14:05:20 +0000
Subject: ar71xx: use dynamic clock dividers on the 2nd MDIO of AR934x
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33343 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../linux/ar71xx/files/arch/mips/ath79/dev-eth.c | 33 ++++++++++++++++++++++
.../601-MIPS-ath79-add-more-register-defines.patch | 18 +++++++++---
2 files changed, 47 insertions(+), 4 deletions(-)
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
index e6a507601..d2d0ee87f 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
@@ -19,6 +19,7 @@
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
+#include <linux/clk.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
@@ -146,6 +147,31 @@ static void ath79_mii_ctrl_set_speed(unsigned int reg, unsigned int speed)
iounmap(base);
}
+static unsigned long ar934x_get_mdio_ref_clock(void)
+{
+ void __iomem *base;
+ unsigned long ret;
+ u32 t;
+
+ base = ioremap(AR71XX_PLL_BASE, AR71XX_PLL_SIZE);
+
+ ret = 0;
+ t = __raw_readl(base + AR934X_PLL_SWITCH_CLOCK_CONTROL_REG);
+ if (t & AR934X_PLL_SWITCH_CLOCK_CONTROL_MDIO_CLK_SEL) {
+ ret = 100 * 1000 * 1000;
+ } else {
+ struct clk *clk;
+
+ clk = clk_get(NULL, "ref");
+ if (!IS_ERR(clk))
+ ret = clk_get_rate(clk);
+ }
+
+ iounmap(base);
+
+ return ret;
+}
+
void __init ath79_register_mdio(unsigned int id, u32 phy_mask)
{
struct platform_device *mdio_dev;
@@ -217,6 +243,13 @@ void __init ath79_register_mdio(unsigned int id, u32 phy_mask)
case ATH79_SOC_AR9341:
case ATH79_SOC_AR9342:
case ATH79_SOC_AR9344:
+ if (id == 1) {
+ mdio_data->builtin_switch = 1;
+ mdio_data->ref_clock = ar934x_get_mdio_ref_clock();
+ mdio_data->mdio_clock = 6250000;
+ }
+ mdio_data->is_ar934x = 1;
+ break;
case ATH79_SOC_QCA9558:
if (id == 1)
mdio_data->builtin_switch = 1;
diff --git a/target/linux/ar71xx/patches-3.3/601-MIPS-ath79-add-more-register-defines.patch b/target/linux/ar71xx/patches-3.3/601-MIPS-ath79-add-more-register-defines.patch
index ce1b9c50a..84d7166ca 100644
--- a/target/linux/ar71xx/patches-3.3/601-MIPS-ath79-add-more-register-defines.patch
+++ b/target/linux/ar71xx/patches-3.3/601-MIPS-ath79-add-more-register-defines.patch
@@ -74,15 +74,25 @@
#define AR933X_PLL_CPU_CONFIG_REG 0x00
#define AR933X_PLL_CLOCK_CTRL_REG 0x08
-@@ -212,6 +232,7 @@
+@@ -212,6 +232,8 @@
#define AR934X_PLL_CPU_CONFIG_REG 0x00
#define AR934X_PLL_DDR_CONFIG_REG 0x04
#define AR934X_PLL_CPU_DDR_CLK_CTRL_REG 0x08
++#define AR934X_PLL_SWITCH_CLOCK_CONTROL_REG 0x24
+#define AR934X_PLL_ETH_XMII_CONTROL_REG 0x2c
#define AR934X_PLL_CPU_CONFIG_NFRAC_SHIFT 0
#define AR934X_PLL_CPU_CONFIG_NFRAC_MASK 0x3f
-@@ -370,16 +391,50 @@
+@@ -244,6 +266,8 @@
+ #define AR934X_PLL_CPU_DDR_CLK_CTRL_DDRCLK_FROM_DDRPLL BIT(21)
+ #define AR934X_PLL_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL BIT(24)
+
++#define AR934X_PLL_SWITCH_CLOCK_CONTROL_MDIO_CLK_SEL BIT(6)
++
+ #define QCA955X_PLL_CPU_CONFIG_REG 0x00
+ #define QCA955X_PLL_DDR_CONFIG_REG 0x04
+ #define QCA955X_PLL_CLK_CTRL_REG 0x08
+@@ -370,16 +394,50 @@
#define AR913X_RESET_USB_HOST BIT(5)
#define AR913X_RESET_USB_PHY BIT(4)
@@ -133,7 +143,7 @@
#define AR933X_BOOTSTRAP_REF_CLK_40 BIT(0)
#define AR934X_BOOTSTRAP_SW_OPTION8 BIT(23)
-@@ -520,6 +575,14 @@
+@@ -520,6 +578,14 @@
#define AR71XX_GPIO_REG_INT_ENABLE 0x24
#define AR71XX_GPIO_REG_FUNC 0x28
@@ -148,7 +158,7 @@
#define AR71XX_GPIO_COUNT 16
#define AR724X_GPIO_COUNT 18
#define AR913X_GPIO_COUNT 22
-@@ -548,4 +611,133 @@
+@@ -548,4 +614,133 @@
#define AR934X_SRIF_DPLL2_OUTDIV_SHIFT 13
#define AR934X_SRIF_DPLL2_OUTDIV_MASK 0x7
--
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