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From 958d1d653fe13627d13907e61ae201fe62ddd99f Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Tue, 21 Feb 2012 09:48:11 +0100
Subject: [PATCH 35/73] MIPS: lantiq: add vr9 support
VR9 is a VDSL SoC made by Lantiq. It is very similar to the AR9.
This patch adds the clkdev init code and SoC detection for the VR9.
Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
---
.../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 3 +
arch/mips/lantiq/xway/clk.c | 83 ++++++++++++++++++++
arch/mips/lantiq/xway/prom.c | 6 ++
arch/mips/lantiq/xway/sysctrl.c | 12 +++-
4 files changed, 103 insertions(+), 1 deletions(-)
--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
@@ -21,6 +21,9 @@
#define SOC_ID_ARX188 0x16C
#define SOC_ID_ARX168 0x16D
#define SOC_ID_ARX182 0x16F
+#define SOC_ID_VRX288 0x1C0 /* VRX288 v1.1 */
+#define SOC_ID_VRX268 0x1C2 /* VRX268 v1.1 */
+#define SOC_ID_GRX288 0x1C9 /* GRX288 v1.1 */
/* SoC Types */
#define SOC_TYPE_DANUBE 0x01
--- a/arch/mips/lantiq/xway/clk.c
+++ b/arch/mips/lantiq/xway/clk.c
@@ -225,3 +225,86 @@ unsigned long ltq_danube_fpi_hz(void)
return ddr_clock >> 1;
return ddr_clock;
}
+
+unsigned long ltq_vr9_cpu_hz(void)
+{
+ unsigned int cpu_sel;
+ unsigned long clk;
+
+ cpu_sel = (ltq_cgu_r32(LTQ_CGU_SYS_VR9) >> 4) & 0xf;
+
+ switch (cpu_sel) {
+ case 0:
+ clk = CLOCK_600M;
+ break;
+ case 1:
+ clk = CLOCK_500M;
+ break;
+ case 2:
+ clk = CLOCK_393M;
+ break;
+ case 3:
+ clk = CLOCK_333M;
+ break;
+ case 5:
+ case 6:
+ clk = CLOCK_196_608M;
+ break;
+ case 7:
+ clk = CLOCK_167M;
+ break;
+ case 4:
+ case 8:
+ case 9:
+ clk = CLOCK_125M;
+ break;
+ default:
+ clk = 0;
+ break;
+ }
+
+ return clk;
+}
+
+unsigned long ltq_vr9_fpi_hz(void)
+{
+ unsigned int ocp_sel, cpu_clk;
+ unsigned long clk;
+
+ cpu_clk = ltq_vr9_cpu_hz();
+ ocp_sel = ltq_cgu_r32(LTQ_CGU_SYS_VR9) & 0x3;
+
+ switch (ocp_sel) {
+ case 0:
+ /* OCP ratio 1 */
+ clk = cpu_clk;
+ break;
+ case 2:
+ /* OCP ratio 2 */
+ clk = cpu_clk / 2;
+ break;
+ case 3:
+ /* OCP ratio 2.5 */
+ clk = (cpu_clk * 2) / 5;
+ break;
+ case 4:
+ /* OCP ratio 3 */
+ clk = cpu_clk / 3;
+ break;
+ default:
+ clk = 0;
+ break;
+ }
+
+ return clk;
+}
+
+unsigned long ltq_vr9_io_region_clock(void)
+{
+ return ltq_vr9_fpi_hz();
+}
+
+unsigned long ltq_vr9_fpi_bus_clock(int fpi)
+{
+ return ltq_vr9_fpi_hz();
+}
--- a/arch/mips/lantiq/xway/prom.c
+++ b/arch/mips/lantiq/xway/prom.c
@@ -60,6 +60,12 @@ void __init ltq_soc_detect(struct ltq_so
#endif
break;
+ case SOC_ID_VRX268:
+ case SOC_ID_VRX288:
+ i->name = SOC_VR9;
+ i->type = SOC_TYPE_VR9;
+ break;
+
default:
unreachable();
break;
--- a/arch/mips/lantiq/xway/sysctrl.c
+++ b/arch/mips/lantiq/xway/sysctrl.c
@@ -147,7 +147,8 @@ void __init ltq_soc_init(void)
clkdev_add_pmu("ltq_dma", NULL, 0, PMU_DMA);
clkdev_add_pmu("ltq_stp", NULL, 0, PMU_STP);
clkdev_add_pmu("ltq_spi", NULL, 0, PMU_SPI);
- clkdev_add_pmu("ltq_etop", NULL, 0, PMU_PPE);
+ if (!ltq_is_vr9())
+ clkdev_add_pmu("ltq_etop", NULL, 0, PMU_PPE);
if (ltq_is_ase()) {
if (ltq_cgu_r32(LTQ_CGU_SYS) & (1 << 5))
clkdev_add_static(CLOCK_266M, CLOCK_133M, CLOCK_133M);
@@ -155,6 +156,15 @@ void __init ltq_soc_init(void)
clkdev_add_static(CLOCK_133M, CLOCK_133M, CLOCK_133M);
clkdev_add_cgu("ltq_etop", "ephycgu", CGU_EPHY),
clkdev_add_pmu("ltq_etop", "ephy", 0, PMU_EPHY);
+ } else if (ltq_is_vr9()) {
+ clkdev_add_static(ltq_vr9_cpu_hz(), ltq_vr9_fpi_hz(),
+ ltq_vr9_io_region_clock());
+ clkdev_add_pmu("ltq_pcie", "phy", 1, PMU1_PCIE_PHY);
+ clkdev_add_pmu("ltq_pcie", "bus", 0, PMU_PCIE_CLK);
+ clkdev_add_pmu("ltq_pcie", "msi", 1, PMU1_PCIE_MSI);
+ clkdev_add_pmu("ltq_pcie", "pdi", 1, PMU1_PCIE_PDI);
+ clkdev_add_pmu("ltq_pcie", "ctl", 1, PMU1_PCIE_CTL);
+ clkdev_add_pmu("ltq_pcie", "ahb", 0, PMU_AHBM | PMU_AHBS);
} else {
clkdev_add_static(ltq_danube_cpu_hz(), ltq_danube_fpi_hz(),
ltq_danube_io_region_clock());
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