armv8: ls2080ardb: invert irq pins polarity for AQR405 PHY

To use AQR405 PHY's interrupt, we need to invert the relative IRQ pins
polarity by setting IRQCR register, because AQR405 interrupt is low
active but GIC accepts high active.

Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h

@@ -98,6 +98,10 @@
 #define DCFG_DCSR_BASE		0X700100000ULL
 #define DCFG_DCSR_PORCR1		0x000
 
+/* Interrupt Sampling Control */
+#define ISC_BASE		0x01F70000
+#define IRQCR_OFFSET		0x14
+
 /* Supplemental Configuration */
 #define SCFG_BASE		0x01fc0000
 #define SCFG_USB3PRM1CR			0x000

board/freescale/ls2080ardb/ls2080ardb.c

@@ -149,6 +149,7 @@ int board_init(void)
 {
 	char *env_hwconfig;
 	u32 __iomem *dcfg_ccsr = (u32 __iomem *)DCFG_BASE;
+	u32 __iomem *irq_ccsr = (u32 __iomem *)ISC_BASE;
 	u32 val;
 
 	init_final_memctl_regs();
@@ -170,6 +171,9 @@ int board_init(void)
 
 	QIXIS_WRITE(rst_ctl, QIXIS_RST_CTL_RESET_EN);
 
+	/* invert AQR405 IRQ pins polarity */
+	out_le32(irq_ccsr + IRQCR_OFFSET / 4, AQR405_IRQ_MASK);
+
 	return 0;
 }
 

include/configs/ls2080ardb.h

@@ -355,6 +355,7 @@ unsigned long get_board_sys_clk(void);
 #define AQ_PHY_ADDR2		0x01
 #define AQ_PHY_ADDR3		0x02
 #define AQ_PHY_ADDR4		0x03
+#define AQR405_IRQ_MASK		0x36
 
 #define CONFIG_MII
 #define CONFIG_ETHPRIME		"DPNI1"