(Added Mario and Chris)
On 27.05.2018 17:34, Baruch Siach wrote:
From: Rabeeh Khoury <rab...@solid-run.com>
Some QCA988x based modules presence is not detected by the SERDES lanes,
so force this detection which will trigger the LTSSM state machine to
negotiate link.
An example of such a card is WLE900VX.
Signed-off-by: Rabeeh Khoury <rab...@solid-run.com>
Signed-off-by: Baruch Siach <bar...@tkos.co.il>
---
arch/arm/mach-mvebu/serdes/a38x/high_speed_env_spec.c | 2 ++
arch/arm/mach-mvebu/serdes/a38x/sys_env_lib.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/arch/arm/mach-mvebu/serdes/a38x/high_speed_env_spec.c
b/arch/arm/mach-mvebu/serdes/a38x/high_speed_env_spec.c
index 13553cf96008..33e70569bc48 100644
--- a/arch/arm/mach-mvebu/serdes/a38x/high_speed_env_spec.c
+++ b/arch/arm/mach-mvebu/serdes/a38x/high_speed_env_spec.c
@@ -597,6 +597,8 @@ struct op_params pex_electrical_config_serdes_rev2_params[]
= {
{LANE_CFG4_REG, 0x800, 0x8, {0x8}, 0, 0},
/* tximpcal_th and rximpcal_th */
{VTHIMPCAL_CTRL_REG, 0x800, 0xff00, {0x3000}, 0, 0},
+ /* Force receiver detected */
+ {LANE_CFG0_REG, 0x800, 0x8000, {0x8000}, 0, 0},
};
/* PEX - configuration seq for REF_CLOCK_25MHz */
diff --git a/arch/arm/mach-mvebu/serdes/a38x/sys_env_lib.h
b/arch/arm/mach-mvebu/serdes/a38x/sys_env_lib.h
index 953445b7d7ae..50b235826659 100644
--- a/arch/arm/mach-mvebu/serdes/a38x/sys_env_lib.h
+++ b/arch/arm/mach-mvebu/serdes/a38x/sys_env_lib.h
@@ -71,6 +71,7 @@
#define RX_REG3 0xa0188
#define PCIE_REG1 0xa0288
#define PCIE_REG3 0xa0290
+#define LANE_CFG0_REG 0xa0600
#define LANE_CFG1_REG 0xa0604
#define LANE_CFG4_REG 0xa0620
#define LANE_CFG5_REG 0xa0624
I understand that this might fix an issue on a specific board (ClearFog
in this case, correct?). But are you sure that its safe to force this
link detection for all A38x boards?
Thanks,
Stefan
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