armv8/fsl-lsch2: Implement workaround for PIN MUX erratum A010539
Pin mux logic has 2 options in priority order, one is through RCW_SRC
and then through RCW_Fields. In case of QSPI booting, RCW_SRC logic
takes the priority for SPI pads and do not allow RCW_BASE and SPI_EXT
to control the SPI muxing. But actually those are DSPI controller's
pads instead of QSPI controller's, so this workaround allows RCW
fields SPI_BASE and SPI_EXT to control relevant pads muxing.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[York Sun: Reformatted commit message]
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index f8057ba..5a4c844 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -6,12 +6,17 @@
config ARCH_LS1043A
bool "Freescale Layerscape LS1043A SoC"
select SYS_FSL_ERRATUM_A010315
+ select SYS_FSL_ERRATUM_A010539
config ARCH_LS1046A
bool "Freescale Layerscape LS1046A SoC"
+ select SYS_FSL_ERRATUM_A010539
config SYS_FSL_MMDC
bool "Freescale Multi Mode DDR Controller"
config SYS_FSL_ERRATUM_A010315
bool "Workaround for PCIe erratum A010315"
+
+config SYS_FSL_ERRATUM_A010539
+ bool "Workaround for PIN MUX erratum A010539"
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index aa6a184..d68eeba 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -320,6 +320,19 @@
}
#endif
+static void erratum_a010539(void)
+{
+#if defined(CONFIG_SYS_FSL_ERRATUM_A010539) && defined(CONFIG_QSPI_BOOT)
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ u32 porsr1;
+
+ porsr1 = in_be32(&gur->porsr1);
+ porsr1 &= ~FSL_CHASSIS2_CCSR_PORSR1_RCW_MASK;
+ out_be32((void *)(CONFIG_SYS_DCSR_DCFG_ADDR + DCFG_DCSR_PORCR1),
+ porsr1);
+#endif
+}
+
void fsl_lsch2_early_init_f(void)
{
struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
@@ -353,6 +366,7 @@
erratum_a008850_early(); /* part 1 of 2 */
erratum_a009929();
erratum_a009660();
+ erratum_a010539();
}
#endif
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
index 3d00909..d88543d 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
@@ -168,6 +168,8 @@
(CONFIG_SYS_IMMR + CONFIG_SYS_FSL_JR0_OFFSET)
/* Device Configuration and Pin Control */
+#define DCFG_DCSR_PORCR1 0x0
+
struct ccsr_gur {
u32 porsr1; /* POR status 1 */
#define FSL_CHASSIS2_CCSR_PORSR1_RCW_MASK 0xFF800000