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-rw-r--r--drivers/soc/keystone/keystone_serdes.c112
1 files changed, 65 insertions, 47 deletions
diff --git a/drivers/soc/keystone/keystone_serdes.c b/drivers/soc/keystone/keystone_serdes.c
index 84ed9ba..dd5eac9 100644
--- a/drivers/soc/keystone/keystone_serdes.c
+++ b/drivers/soc/keystone/keystone_serdes.c
@@ -29,12 +29,24 @@
#define SERDES_LANE_LOOPBACK BIT(30)
#define SERDES_LANE_EN_VAL(x, y, z) (x[y] | (z << 26) | (z << 10))
+#define SERDES_CMU_CFG_NUM 5
+#define SERDES_COMLANE_CFG_NUM 10
+#define SERDES_LANE_CFG_NUM 10
+
struct serdes_cfg {
u32 ofs;
u32 val;
u32 mask;
};
+struct cfg_entry {
+ enum ks2_serdes_clock clk;
+ enum ks2_serdes_rate rate;
+ struct serdes_cfg cmu[SERDES_CMU_CFG_NUM];
+ struct serdes_cfg comlane[SERDES_COMLANE_CFG_NUM];
+ struct serdes_cfg lane[SERDES_LANE_CFG_NUM];
+};
+
/* SERDES PHY lane enable configuration value, indexed by PHY interface */
static u32 serdes_cfg_lane_enable[] = {
0xf000f0c0, /* SGMII */
@@ -47,39 +59,46 @@ static u32 serdes_cfg_pll_enable[] = {
0xee000000, /* PCSR */
};
-static struct serdes_cfg cfg_cmu_156p25m_5g[] = {
- {0x0000, 0x00800000, 0xffff0000},
- {0x0014, 0x00008282, 0x0000ffff},
- {0x0060, 0x00142438, 0x00ffffff},
- {0x0064, 0x00c3c700, 0x00ffff00},
- {0x0078, 0x0000c000, 0x0000ff00}
-};
-
-static struct serdes_cfg cfg_comlane_156p25m_5g[] = {
- {0x0a00, 0x00000800, 0x0000ff00},
- {0x0a08, 0x38a20000, 0xffff0000},
- {0x0a30, 0x008a8a00, 0x00ffff00},
- {0x0a84, 0x00000600, 0x0000ff00},
- {0x0a94, 0x10000000, 0xff000000},
- {0x0aa0, 0x81000000, 0xff000000},
- {0x0abc, 0xff000000, 0xff000000},
- {0x0ac0, 0x0000008b, 0x000000ff},
- {0x0b08, 0x583f0000, 0xffff0000},
- {0x0b0c, 0x0000004e, 0x000000ff}
-};
-
-static struct serdes_cfg cfg_lane_156p25mhz_5g[] = {
- {0x0004, 0x38000080, 0xff0000ff},
- {0x0008, 0x00000000, 0x000000ff},
- {0x000c, 0x02000000, 0xff000000},
- {0x0010, 0x1b000000, 0xff000000},
- {0x0014, 0x00006fb8, 0x0000ffff},
- {0x0018, 0x758000e4, 0xffff00ff},
- {0x00ac, 0x00004400, 0x0000ff00},
- {0x002c, 0x00100800, 0x00ffff00},
- {0x0080, 0x00820082, 0x00ff00ff},
- {0x0084, 0x1d0f0385, 0xffffffff}
-
+/**
+ * Array to hold all possible serdes configurations.
+ * Combination for 5 clock settings and 6 baud rates.
+ */
+static struct cfg_entry cfgs[] = {
+ {
+ .clk = SERDES_CLOCK_156P25M,
+ .rate = SERDES_RATE_5G,
+ .cmu = {
+ {0x0000, 0x00800000, 0xffff0000},
+ {0x0014, 0x00008282, 0x0000ffff},
+ {0x0060, 0x00142438, 0x00ffffff},
+ {0x0064, 0x00c3c700, 0x00ffff00},
+ {0x0078, 0x0000c000, 0x0000ff00}
+ },
+ .comlane = {
+ {0x0a00, 0x00000800, 0x0000ff00},
+ {0x0a08, 0x38a20000, 0xffff0000},
+ {0x0a30, 0x008a8a00, 0x00ffff00},
+ {0x0a84, 0x00000600, 0x0000ff00},
+ {0x0a94, 0x10000000, 0xff000000},
+ {0x0aa0, 0x81000000, 0xff000000},
+ {0x0abc, 0xff000000, 0xff000000},
+ {0x0ac0, 0x0000008b, 0x000000ff},
+ {0x0b08, 0x583f0000, 0xffff0000},
+ {0x0b0c, 0x0000004e, 0x000000ff}
+ },
+ .lane = {
+ {0x0004, 0x38000080, 0xff0000ff},
+ {0x0008, 0x00000000, 0x000000ff},
+ {0x000c, 0x02000000, 0xff000000},
+ {0x0010, 0x1b000000, 0xff000000},
+ {0x0014, 0x00006fb8, 0x0000ffff},
+ {0x0018, 0x758000e4, 0xffff00ff},
+ {0x00ac, 0x00004400, 0x0000ff00},
+ {0x002c, 0x00100800, 0x00ffff00},
+ {0x0080, 0x00820082, 0x00ff00ff},
+ {0x0084, 0x1d0f0385, 0xffffffff}
+ },
+ },
};
static inline void ks2_serdes_rmw(u32 addr, u32 value, u32 mask)
@@ -105,18 +124,15 @@ static void ks2_serdes_lane_config(u32 base, struct serdes_cfg *cfg_lane,
cfg_lane[i].val, cfg_lane[i].mask);
}
-static int ks2_serdes_init_156p25m_5g(u32 base, u32 num_lanes)
+static int ks2_serdes_init_cfg(u32 base, struct cfg_entry *cfg, u32 num_lanes)
{
u32 i;
- ks2_serdes_cfg_setup(base, cfg_cmu_156p25m_5g,
- ARRAY_SIZE(cfg_cmu_156p25m_5g));
- ks2_serdes_cfg_setup(base, cfg_comlane_156p25m_5g,
- ARRAY_SIZE(cfg_comlane_156p25m_5g));
+ ks2_serdes_cfg_setup(base, cfg->cmu, SERDES_CMU_CFG_NUM);
+ ks2_serdes_cfg_setup(base, cfg->comlane, SERDES_COMLANE_CFG_NUM);
for (i = 0; i < num_lanes; i++)
- ks2_serdes_lane_config(base, cfg_lane_156p25mhz_5g,
- ARRAY_SIZE(cfg_lane_156p25mhz_5g), i);
+ ks2_serdes_lane_config(base, cfg->lane, SERDES_LANE_CFG_NUM, i);
return 0;
}
@@ -173,14 +189,16 @@ int ks2_serdes_init(u32 base, struct ks2_serdes *serdes, u32 num_lanes)
int i;
int ret = 0;
- /* The driver currently supports 5GBaud rate with ref clock 156.25MHz */
- if (serdes->clk == SERDES_CLOCK_156P25M)
- if (serdes->rate == SERDES_RATE_5G)
- ret = ks2_serdes_init_156p25m_5g(base, num_lanes);
- else
- return -EINVAL;
- else
+ for (i = 0; i < ARRAY_SIZE(cfgs); i++)
+ if (serdes->clk == cfgs[i].clk && serdes->rate == cfgs[i].rate)
+ break;
+
+ if (i >= ARRAY_SIZE(cfgs)) {
+ puts("Cannot find keystone SerDes configuration");
return -EINVAL;
+ }
+
+ ks2_serdes_init_cfg(base, &cfgs[i], num_lanes);
ks2_serdes_cmu_comlane_enable(base, serdes);
for (i = 0; i < num_lanes; i++)