[OpenWrt-Devel] [PATCH v2] ar71xx: Add eth rx delay for qca955x platforms

[Chris Blake]

This patch is to add support for qca955x_eth_rx_delay to work with the
qca955x SoC.

Signed-off-by: Chris R Blake <chrisrblake93 at gmail.com>

---
diff -rupN
a/target/linux/ar71xx/patches-4.1/742-MIPS-ath79-add-qca955x-mac-tx-rx-delay.patch
b/target/linux/ar71xx/patches-4.1/742-MIPS-ath79-add-qca955x-mac-tx-rx-delay.patch
---
a/target/linux/ar71xx/patches-4.1/742-MIPS-ath79-add-qca955x-mac-tx-rx-delay.patch
1969-12-31 18:00:00.000000000 -0600
+++
b/target/linux/ar71xx/patches-4.1/742-MIPS-ath79-add-qca955x-mac-tx-rx-delay.patch
2015-09-17 07:50:06.000000000 -0500
@@ -0,0 +1,58 @@
+--- a/arch/mips/ath79/dev-eth.c
++++ b/arch/mips/ath79/dev-eth.c
+@@ -823,6 +825,32 @@
+ iounmap(base);
+ }
+
++void __init ath79_setup_qca955x_eth_rx_delay(unsigned int rxd,
++      unsigned int rxdv)
++{
++ void __iomem *base;
++ u32 t;
++
++ rxd &= QCA955X_ETH_CFG_RXD_DELAY_MASK;
++ rxdv &= QCA955X_ETH_CFG_RDV_DELAY_MASK;
++
++ base = ioremap(QCA955X_GMAC_BASE, QCA955X_GMAC_SIZE);
++
++ t = __raw_readl(base + QCA955X_GMAC_REG_ETH_CFG);
++
++ t &= ~(QCA955X_ETH_CFG_RXD_DELAY_MASK << QCA955X_ETH_CFG_RXD_DELAY_SHIFT
|
++       QCA955X_ETH_CFG_RDV_DELAY_MASK << QCA955X_ETH_CFG_RDV_DELAY_SHIFT);
++
++ t |= (rxd << QCA955X_ETH_CFG_RXD_DELAY_SHIFT |
++      rxdv << QCA955X_ETH_CFG_RDV_DELAY_SHIFT);
++
++ __raw_writel(t, base + QCA955X_GMAC_REG_ETH_CFG);
++ /* flush write */
++ __raw_readl(base + QCA955X_GMAC_REG_ETH_CFG);
++
++ iounmap(base);
++}
++
+ static int ath79_eth_instance __initdata;
+ void __init ath79_register_eth(unsigned int id)
+ {
+--- a/arch/mips/ath79/dev-eth.h
++++ b/arch/mips/ath79/dev-eth.h
+@@ -49,5 +49,6 @@
+ void ath79_setup_ar934x_eth_cfg(u32 mask);
+ void ath79_setup_ar934x_eth_rx_delay(unsigned int rxd, unsigned int rxdv);
+ void ath79_setup_qca955x_eth_cfg(u32 mask);
++void ath79_setup_qca955x_eth_rx_delay(unsigned int rxd, unsigned int
rxdv);
+
+ #endif /* _ATH79_DEV_ETH_H */
+--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+@@ -1098,5 +1098,11 @@
+
+ #define QCA955X_ETH_CFG_RGMII_EN BIT(0)
+ #define QCA955X_ETH_CFG_GE0_SGMII BIT(6)
++#define QCA955X_ETH_CFG_RXD_DELAY BIT(14)
++#define QCA955X_ETH_CFG_RXD_DELAY_MASK 0x3
++#define QCA955X_ETH_CFG_RXD_DELAY_SHIFT 14
++#define QCA955X_ETH_CFG_RDV_DELAY BIT(16)
++#define QCA955X_ETH_CFG_RDV_DELAY_MASK 0x3
++#define QCA955X_ETH_CFG_RDV_DELAY_SHIFT 16
+
+ #endif /* __ASM_MACH_AR71XX_REGS_H */
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