soc: bcm: brcmstb: biuctrl: Tune 7260 BIU interface

7260A0 and B0 are both supported, and 7260A0 has a small difference in
that it does not support the write-back control register, which is why
we have a different array of registers. Update the comment above
b53_cpubiuctrl_no_wb_regs to denote that difference.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

diff --git a/drivers/soc/bcm/brcmstb/biuctrl.c b/drivers/soc/bcm/brcmstb/biuctrl.c
index d326915..6be9753 100644 (file)
--- a/drivers/soc/bcm/brcmstb/biuctrl.c
+++ b/drivers/soc/bcm/brcmstb/biuctrl.c
@@ -63,7 +63,7 @@ static const int b15_cpubiuctrl_regs[] = {
        [CPU_WRITEBACK_CTRL_REG] = -1,
 };
 
-/* Odd cases, e.g: 7260 */
+/* Odd cases, e.g: 7260A0 */
 static const int b53_cpubiuctrl_no_wb_regs[] = {
        [CPU_CREDIT_REG] = 0x0b0,
        [CPU_MCP_FLOW_REG] = 0x0b4,
@@ -102,6 +102,7 @@ static int __init mcp_write_pairing_set(void)
 }
 
 static const u32 b53_mach_compat[] = {
+       0x7260,
        0x7268,
        0x7271,
        0x7278,
@@ -157,6 +158,7 @@ static void __init mcp_b53_set(void)
 static int __init setup_hifcpubiuctrl_regs(struct device_node *np)
 {
        struct device_node *cpu_dn;
+       u32 family_id;
        int ret = 0;
 
        cpubiuctrl_base = of_iomap(np, 0);
@@ -185,7 +187,8 @@ static int __init setup_hifcpubiuctrl_regs(struct device_node *np)
        }
        of_node_put(cpu_dn);
 
-       if (BRCM_ID(brcmstb_get_family_id()) == 0x7260)
+       family_id = brcmstb_get_family_id();
+       if (BRCM_ID(family_id) == 0x7260 && BRCM_REV(family_id) == 0)
                cpubiuctrl_regs = b53_cpubiuctrl_no_wb_regs;
 out:
        of_node_put(np);