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-rw-r--r--arch/arm/cpu/armv8/fsl-layerscape/Kconfig77
-rw-r--r--arch/arm/cpu/armv8/fsl-layerscape/cpu.c3
-rw-r--r--arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c69
3 files changed, 131 insertions, 18 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 7572f19..92e8fa6 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -163,6 +163,83 @@ config SYS_HAS_SERDES
endmenu
+menu "Layerscape clock tree configuration"
+ depends on FSL_LSCH2 || FSL_LSCH3
+
+config SYS_FSL_CLK
+ bool "Enable clock tree initialization"
+ default y
+
+config CLUSTER_CLK_FREQ
+ int "Reference clock of core cluster"
+ depends on ARCH_LS1012A
+ default 100000000
+ help
+ This number is the reference clock frequency of core PLL.
+ For most platforms, the core PLL and Platform PLL have the same
+ reference clock, but for some platforms, LS1012A for instance,
+ they are provided sepatately.
+
+config SYS_FSL_PCLK_DIV
+ int "Platform clock divider"
+ default 1 if ARCH_LS1043A
+ default 1 if ARCH_LS1046A
+ default 2
+ help
+ This is the divider that is used to derive Platform clock from
+ Platform PLL, in another word:
+ Platform_clk = Platform_PLL_freq / this_divider
+
+config SYS_FSL_DSPI_CLK_DIV
+ int "DSPI clock divider"
+ default 1 if ARCH_LS1043A
+ default 2
+ help
+ This is the divider that is used to derive DSPI clock from Platform
+ PLL, in another word DSPI_clk = Platform_PLL_freq / this_divider.
+
+config SYS_FSL_DUART_CLK_DIV
+ int "DUART clock divider"
+ default 1 if ARCH_LS1043A
+ default 2
+ help
+ This is the divider that is used to derive DUART clock from Platform
+ clock, in another word DUART_clk = Platform_clk / this_divider.
+
+config SYS_FSL_I2C_CLK_DIV
+ int "I2C clock divider"
+ default 1 if ARCH_LS1043A
+ default 2
+ help
+ This is the divider that is used to derive I2C clock from Platform
+ clock, in another word I2C_clk = Platform_clk / this_divider.
+
+config SYS_FSL_IFC_CLK_DIV
+ int "IFC clock divider"
+ default 1 if ARCH_LS1043A
+ default 2
+ help
+ This is the divider that is used to derive IFC clock from Platform
+ clock, in another word IFC_clk = Platform_clk / this_divider.
+
+config SYS_FSL_LPUART_CLK_DIV
+ int "LPUART clock divider"
+ default 1 if ARCH_LS1043A
+ default 2
+ help
+ This is the divider that is used to derive LPUART clock from Platform
+ clock, in another word LPUART_clk = Platform_clk / this_divider.
+
+config SYS_FSL_SDHC_CLK_DIV
+ int "SDHC clock divider"
+ default 1 if ARCH_LS1043A
+ default 1 if ARCH_LS1012A
+ default 2
+ help
+ This is the divider that is used to derive SDHC clock from Platform
+ clock, in another word SDHC_clk = Platform_clk / this_divider.
+endmenu
+
config SYS_FSL_ERRATUM_A008336
bool
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index 467d9af..3bdeb0e 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -345,8 +345,9 @@ int print_cpuinfo(void)
(type == TY_ITYP_VER_A72 ? "A72" : " "))),
strmhz(buf, sysinfo.freq_processor[core]));
}
+ /* Display platform clock as Bus frequency. */
printf("\n Bus: %-4s MHz ",
- strmhz(buf, sysinfo.freq_systembus));
+ strmhz(buf, sysinfo.freq_systembus / CONFIG_SYS_FSL_PCLK_DIV));
printf("DDR: %-4s MT/s", strmhz(buf, sysinfo.freq_ddrbus));
#ifdef CONFIG_SYS_DPAA_FMAN
printf(" FMAN: %-4s MHz", strmhz(buf, sysinfo.freq_fman[0]));
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
index 55005f0..3da7037 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
@@ -52,22 +52,28 @@ void get_sys_info(struct sys_info *sys_info)
uint freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS];
uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
+ unsigned long cluster_clk;
sys_info->freq_systembus = sysclk;
+#ifndef CONFIG_CLUSTER_CLK_FREQ
+#define CONFIG_CLUSTER_CLK_FREQ CONFIG_SYS_CLK_FREQ
+#endif
+ cluster_clk = CONFIG_CLUSTER_CLK_FREQ;
+
#ifdef CONFIG_DDR_CLK_FREQ
sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
#else
sys_info->freq_ddrbus = sysclk;
#endif
-#ifdef CONFIG_ARCH_LS1012A
- sys_info->freq_ddrbus *= (gur_in32(&gur->rcwsr[0]) >>
- FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_SHIFT) &
- FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_MASK;
-#else
+ /* The freq_systembus is used to record frequency of platform PLL */
sys_info->freq_systembus *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_SHIFT) &
FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_MASK;
+
+#ifdef CONFIG_ARCH_LS1012A
+ sys_info->freq_ddrbus = 2 * sys_info->freq_systembus;
+#else
sys_info->freq_ddrbus *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS2_RCWSR0_MEM_PLL_RAT_SHIFT) &
FSL_CHASSIS2_RCWSR0_MEM_PLL_RAT_MASK;
@@ -76,7 +82,7 @@ void get_sys_info(struct sys_info *sys_info)
for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) {
ratio[i] = (in_be32(&clk->pllcgsr[i].pllcngsr) >> 1) & 0xff;
if (ratio[i] > 4)
- freq_c_pll[i] = sysclk * ratio[i];
+ freq_c_pll[i] = cluster_clk * ratio[i];
else
freq_c_pll[i] = sys_info->freq_systembus * ratio[i];
}
@@ -91,11 +97,6 @@ void get_sys_info(struct sys_info *sys_info)
freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
}
-#ifdef CONFIG_ARCH_LS1012A
- sys_info->freq_systembus = sys_info->freq_ddrbus / 2;
- sys_info->freq_ddrbus *= 2;
-#endif
-
#define HWA_CGA_M1_CLK_SEL 0xe0000000
#define HWA_CGA_M1_CLK_SHIFT 29
#ifdef CONFIG_SYS_DPAA_FMAN
@@ -148,7 +149,9 @@ void get_sys_info(struct sys_info *sys_info)
break;
}
#else
- sys_info->freq_sdhc = sys_info->freq_systembus;
+ sys_info->freq_sdhc = (sys_info->freq_systembus /
+ CONFIG_SYS_FSL_PCLK_DIV) /
+ CONFIG_SYS_FSL_SDHC_CLK_DIV;
#endif
#endif
@@ -166,7 +169,7 @@ int get_clocks(void)
get_sys_info(&sys_info);
gd->cpu_clk = sys_info.freq_processor[0];
- gd->bus_clk = sys_info.freq_systembus;
+ gd->bus_clk = sys_info.freq_systembus / CONFIG_SYS_FSL_PCLK_DIV;
gd->mem_clk = sys_info.freq_ddrbus;
#ifdef CONFIG_FSL_ESDHC
@@ -179,41 +182,73 @@ int get_clocks(void)
return 1;
}
+/********************************************
+ * get_bus_freq
+ * return platform clock in Hz
+ *********************************************/
ulong get_bus_freq(ulong dummy)
{
+ if (!gd->bus_clk)
+ get_clocks();
+
return gd->bus_clk;
}
ulong get_ddr_freq(ulong dummy)
{
+ if (!gd->mem_clk)
+ get_clocks();
+
return gd->mem_clk;
}
#ifdef CONFIG_FSL_ESDHC
int get_sdhc_freq(ulong dummy)
{
+ if (!gd->arch.sdhc_clk)
+ get_clocks();
+
return gd->arch.sdhc_clk;
}
#endif
int get_serial_clock(void)
{
- return gd->bus_clk;
+ return get_bus_freq(0) / CONFIG_SYS_FSL_DUART_CLK_DIV;
+}
+
+int get_i2c_freq(ulong dummy)
+{
+ return get_bus_freq(0) / CONFIG_SYS_FSL_I2C_CLK_DIV;
+}
+
+int get_dspi_freq(ulong dummy)
+{
+ return get_bus_freq(0) / CONFIG_SYS_FSL_DSPI_CLK_DIV;
}
+#ifdef CONFIG_FSL_LPUART
+int get_uart_freq(ulong dummy)
+{
+ return get_bus_freq(0) / CONFIG_SYS_FSL_LPUART_CLK_DIV;
+}
+#endif
+
unsigned int mxc_get_clock(enum mxc_clock clk)
{
switch (clk) {
case MXC_I2C_CLK:
- return get_bus_freq(0);
+ return get_i2c_freq(0);
#if defined(CONFIG_FSL_ESDHC)
case MXC_ESDHC_CLK:
return get_sdhc_freq(0);
#endif
case MXC_DSPI_CLK:
- return get_bus_freq(0);
+ return get_dspi_freq(0);
+#ifdef CONFIG_FSL_LPUART
case MXC_UART_CLK:
- return get_bus_freq(0);
+ return get_uart_freq(0);
+#endif
default:
printf("Unsupported clock\n");
}
generated by cgit v0.10.2 at 2024-06-28 01:12:55 (GMT)