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-rw-r--r--drivers/clk/ingenic/cgu.c11
-rw-r--r--drivers/clk/ingenic/cgu.h6
-rw-r--r--drivers/clk/ingenic/jz4740-cgu.c24
-rw-r--r--drivers/clk/ingenic/jz4780-cgu.c40
4 files changed, 47 insertions, 34 deletions
diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c
index 7cfb7b2a2ed6..e8248f9185f7 100644
--- a/drivers/clk/ingenic/cgu.c
+++ b/drivers/clk/ingenic/cgu.c
@@ -325,6 +325,7 @@ ingenic_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
div = (div_reg >> clk_info->div.shift) &
GENMASK(clk_info->div.bits - 1, 0);
div += 1;
+ div *= clk_info->div.div;
rate /= div;
}
@@ -345,6 +346,14 @@ ingenic_clk_calc_div(const struct ingenic_cgu_clk_info *clk_info,
div = min_t(unsigned, div, 1 << clk_info->div.bits);
div = max_t(unsigned, div, 1);
+ /*
+ * If the divider value itself must be divided before being written to
+ * the divider register, we must ensure we don't have any bits set that
+ * would be lost as a result of doing so.
+ */
+ div /= clk_info->div.div;
+ div *= clk_info->div.div;
+
return div;
}
@@ -395,7 +404,7 @@ ingenic_clk_set_rate(struct clk_hw *hw, unsigned long req_rate,
/* update the divide */
mask = GENMASK(clk_info->div.bits - 1, 0);
reg &= ~(mask << clk_info->div.shift);
- reg |= (div - 1) << clk_info->div.shift;
+ reg |= ((div / clk_info->div.div) - 1) << clk_info->div.shift;
/* clear the stop bit */
if (clk_info->div.stop_bit != -1)
diff --git a/drivers/clk/ingenic/cgu.h b/drivers/clk/ingenic/cgu.h
index 99347e2b97e8..09700b2c555d 100644
--- a/drivers/clk/ingenic/cgu.h
+++ b/drivers/clk/ingenic/cgu.h
@@ -76,8 +76,11 @@ struct ingenic_cgu_mux_info {
/**
* struct ingenic_cgu_div_info - information about a divider
* @reg: offset of the divider control register within the CGU
- * @shift: number of bits to shift the divide value by (ie. the index of
+ * @shift: number of bits to left shift the divide value by (ie. the index of
* the lowest bit of the divide value within its control register)
+ * @div: number of bits to divide the divider value by (i.e. if the
+ * effective divider value is the value written to the register
+ * multiplied by some constant)
* @bits: the size of the divide value in bits
* @ce_bit: the index of the change enable bit within reg, or -1 if there
* isn't one
@@ -87,6 +90,7 @@ struct ingenic_cgu_mux_info {
struct ingenic_cgu_div_info {
unsigned reg;
u8 shift;
+ u8 div;
u8 bits;
s8 ce_bit;
s8 busy_bit;
diff --git a/drivers/clk/ingenic/jz4740-cgu.c b/drivers/clk/ingenic/jz4740-cgu.c
index 305a26c2a800..510fe7e0c8f1 100644
--- a/drivers/clk/ingenic/jz4740-cgu.c
+++ b/drivers/clk/ingenic/jz4740-cgu.c
@@ -90,51 +90,51 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
[JZ4740_CLK_PLL_HALF] = {
"pll half", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
- .div = { CGU_REG_CPCCR, 21, 1, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 21, 1, 1, -1, -1, -1 },
},
[JZ4740_CLK_CCLK] = {
"cclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
- .div = { CGU_REG_CPCCR, 0, 4, 22, -1, -1 },
+ .div = { CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_HCLK] = {
"hclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
- .div = { CGU_REG_CPCCR, 4, 4, 22, -1, -1 },
+ .div = { CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_PCLK] = {
"pclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
- .div = { CGU_REG_CPCCR, 8, 4, 22, -1, -1 },
+ .div = { CGU_REG_CPCCR, 8, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_MCLK] = {
"mclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
- .div = { CGU_REG_CPCCR, 12, 4, 22, -1, -1 },
+ .div = { CGU_REG_CPCCR, 12, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_LCD] = {
"lcd", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
- .div = { CGU_REG_CPCCR, 16, 5, 22, -1, -1 },
+ .div = { CGU_REG_CPCCR, 16, 1, 5, 22, -1, -1 },
.gate = { CGU_REG_CLKGR, 10 },
},
[JZ4740_CLK_LCD_PCLK] = {
"lcd_pclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
- .div = { CGU_REG_LPCDR, 0, 11, -1, -1, -1 },
+ .div = { CGU_REG_LPCDR, 0, 1, 11, -1, -1, -1 },
},
[JZ4740_CLK_I2S] = {
"i2s", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL_HALF, -1, -1 },
.mux = { CGU_REG_CPCCR, 31, 1 },
- .div = { CGU_REG_I2SCDR, 0, 8, -1, -1, -1 },
+ .div = { CGU_REG_I2SCDR, 0, 1, 8, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 6 },
},
@@ -142,21 +142,21 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
"spi", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL, -1, -1 },
.mux = { CGU_REG_SSICDR, 31, 1 },
- .div = { CGU_REG_SSICDR, 0, 4, -1, -1, -1 },
+ .div = { CGU_REG_SSICDR, 0, 1, 4, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 4 },
},
[JZ4740_CLK_MMC] = {
"mmc", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
- .div = { CGU_REG_MSCCDR, 0, 5, -1, -1, -1 },
+ .div = { CGU_REG_MSCCDR, 0, 1, 5, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 7 },
},
[JZ4740_CLK_UHC] = {
"uhc", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
- .div = { CGU_REG_UHCCDR, 0, 4, -1, -1, -1 },
+ .div = { CGU_REG_UHCCDR, 0, 1, 4, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 14 },
},
@@ -164,7 +164,7 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
"udc", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL_HALF, -1, -1 },
.mux = { CGU_REG_CPCCR, 29, 1 },
- .div = { CGU_REG_CPCCR, 23, 6, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 23, 1, 6, -1, -1, -1 },
.gate = { CGU_REG_SCR, 6 },
},
diff --git a/drivers/clk/ingenic/jz4780-cgu.c b/drivers/clk/ingenic/jz4780-cgu.c
index 431f962300b6..b35d6d9dd5aa 100644
--- a/drivers/clk/ingenic/jz4780-cgu.c
+++ b/drivers/clk/ingenic/jz4780-cgu.c
@@ -296,13 +296,13 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
[JZ4780_CLK_CPU] = {
"cpu", CGU_CLK_DIV,
.parents = { JZ4780_CLK_CPUMUX, -1, -1, -1 },
- .div = { CGU_REG_CLOCKCONTROL, 0, 4, 22, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 0, 1, 4, 22, -1, -1 },
},
[JZ4780_CLK_L2CACHE] = {
"l2cache", CGU_CLK_DIV,
.parents = { JZ4780_CLK_CPUMUX, -1, -1, -1 },
- .div = { CGU_REG_CLOCKCONTROL, 4, 4, -1, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 4, 1, 4, -1, -1, -1 },
},
[JZ4780_CLK_AHB0] = {
@@ -310,7 +310,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL },
.mux = { CGU_REG_CLOCKCONTROL, 26, 2 },
- .div = { CGU_REG_CLOCKCONTROL, 8, 4, 21, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 8, 1, 4, 21, -1, -1 },
},
[JZ4780_CLK_AHB2PMUX] = {
@@ -323,20 +323,20 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
[JZ4780_CLK_AHB2] = {
"ahb2", CGU_CLK_DIV,
.parents = { JZ4780_CLK_AHB2PMUX, -1, -1, -1 },
- .div = { CGU_REG_CLOCKCONTROL, 12, 4, 20, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 12, 1, 4, 20, -1, -1 },
},
[JZ4780_CLK_PCLK] = {
"pclk", CGU_CLK_DIV,
.parents = { JZ4780_CLK_AHB2PMUX, -1, -1, -1 },
- .div = { CGU_REG_CLOCKCONTROL, 16, 4, 20, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 16, 1, 4, 20, -1, -1 },
},
[JZ4780_CLK_DDR] = {
"ddr", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1 },
.mux = { CGU_REG_DDRCDR, 30, 2 },
- .div = { CGU_REG_DDRCDR, 0, 4, 29, 28, 27 },
+ .div = { CGU_REG_DDRCDR, 0, 1, 4, 29, 28, 27 },
},
[JZ4780_CLK_VPU] = {
@@ -344,7 +344,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL, -1 },
.mux = { CGU_REG_VPUCDR, 30, 2 },
- .div = { CGU_REG_VPUCDR, 0, 4, 29, 28, 27 },
+ .div = { CGU_REG_VPUCDR, 0, 1, 4, 29, 28, 27 },
.gate = { CGU_REG_CLKGR1, 2 },
},
@@ -352,7 +352,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
"i2s_pll", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_EPLL, -1, -1 },
.mux = { CGU_REG_I2SCDR, 30, 1 },
- .div = { CGU_REG_I2SCDR, 0, 8, 29, 28, 27 },
+ .div = { CGU_REG_I2SCDR, 0, 1, 8, 29, 28, 27 },
},
[JZ4780_CLK_I2S] = {
@@ -366,7 +366,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_VPLL, -1 },
.mux = { CGU_REG_LP0CDR, 30, 2 },
- .div = { CGU_REG_LP0CDR, 0, 8, 28, 27, 26 },
+ .div = { CGU_REG_LP0CDR, 0, 1, 8, 28, 27, 26 },
},
[JZ4780_CLK_LCD1PIXCLK] = {
@@ -374,7 +374,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_VPLL, -1 },
.mux = { CGU_REG_LP1CDR, 30, 2 },
- .div = { CGU_REG_LP1CDR, 0, 8, 28, 27, 26 },
+ .div = { CGU_REG_LP1CDR, 0, 1, 8, 28, 27, 26 },
},
[JZ4780_CLK_MSCMUX] = {
@@ -386,21 +386,21 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
[JZ4780_CLK_MSC0] = {
"msc0", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
- .div = { CGU_REG_MSC0CDR, 0, 8, 29, 28, 27 },
+ .div = { CGU_REG_MSC0CDR, 0, 2, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 3 },
},
[JZ4780_CLK_MSC1] = {
"msc1", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
- .div = { CGU_REG_MSC1CDR, 0, 8, 29, 28, 27 },
+ .div = { CGU_REG_MSC1CDR, 0, 2, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 11 },
},
[JZ4780_CLK_MSC2] = {
"msc2", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
- .div = { CGU_REG_MSC2CDR, 0, 8, 29, 28, 27 },
+ .div = { CGU_REG_MSC2CDR, 0, 2, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 12 },
},
@@ -409,7 +409,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL, JZ4780_CLK_OTGPHY },
.mux = { CGU_REG_UHCCDR, 30, 2 },
- .div = { CGU_REG_UHCCDR, 0, 8, 29, 28, 27 },
+ .div = { CGU_REG_UHCCDR, 0, 1, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 24 },
},
@@ -417,7 +417,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
"ssi_pll", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1, -1 },
.mux = { CGU_REG_SSICDR, 30, 1 },
- .div = { CGU_REG_SSICDR, 0, 8, 29, 28, 27 },
+ .div = { CGU_REG_SSICDR, 0, 1, 8, 29, 28, 27 },
},
[JZ4780_CLK_SSI] = {
@@ -430,7 +430,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
"cim_mclk", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1, -1 },
.mux = { CGU_REG_CIMCDR, 31, 1 },
- .div = { CGU_REG_CIMCDR, 0, 8, 30, 29, 28 },
+ .div = { CGU_REG_CIMCDR, 0, 1, 8, 30, 29, 28 },
},
[JZ4780_CLK_PCMPLL] = {
@@ -438,7 +438,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL, JZ4780_CLK_VPLL },
.mux = { CGU_REG_PCMCDR, 29, 2 },
- .div = { CGU_REG_PCMCDR, 0, 8, 28, 27, 26 },
+ .div = { CGU_REG_PCMCDR, 0, 1, 8, 28, 27, 26 },
},
[JZ4780_CLK_PCM] = {
@@ -453,7 +453,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL },
.mux = { CGU_REG_GPUCDR, 30, 2 },
- .div = { CGU_REG_GPUCDR, 0, 4, 29, 28, 27 },
+ .div = { CGU_REG_GPUCDR, 0, 1, 4, 29, 28, 27 },
.gate = { CGU_REG_CLKGR1, 4 },
},
@@ -462,7 +462,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_VPLL, -1 },
.mux = { CGU_REG_HDMICDR, 30, 2 },
- .div = { CGU_REG_HDMICDR, 0, 8, 29, 28, 26 },
+ .div = { CGU_REG_HDMICDR, 0, 1, 8, 29, 28, 26 },
.gate = { CGU_REG_CLKGR1, 9 },
},
@@ -471,7 +471,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL },
.mux = { CGU_REG_BCHCDR, 30, 2 },
- .div = { CGU_REG_BCHCDR, 0, 4, 29, 28, 27 },
+ .div = { CGU_REG_BCHCDR, 0, 1, 4, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 1 },
},
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 20:31:14 +0000