* [PATCH 1/4] clock-mx51: factorize clk_set_parent and clk_get_rate
[not found] <20101012093225.GF29673@pengutronix.d>
@ 2010-10-12 12:23 ` Eric Bénard
2010-10-12 12:23 ` [PATCH 2/4] clock-mx51: rename CLOCK1 to CLOCK_CCGR for better readability Eric Bénard
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: Eric Bénard @ 2010-10-12 12:23 UTC (permalink / raw)
To: linux-arm-kernel
Signed-off-by: Eric B?nard <eric@eukrea.com>
---
arch/arm/mach-mx5/clock-mx51.c | 142 ++++++++++++++--------------------------
1 files changed, 48 insertions(+), 94 deletions(-)
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index 21cecc0..7deb683 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -544,35 +544,6 @@ static int _clk_ipg_per_set_parent(struct clk *clk, struct clk *parent)
return 0;
}
-static unsigned long clk_uart_get_rate(struct clk *clk)
-{
- u32 reg, prediv, podf;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- reg = __raw_readl(MXC_CCM_CSCDR1);
- prediv = ((reg & MXC_CCM_CSCDR1_UART_CLK_PRED_MASK) >>
- MXC_CCM_CSCDR1_UART_CLK_PRED_OFFSET) + 1;
- podf = ((reg & MXC_CCM_CSCDR1_UART_CLK_PODF_MASK) >>
- MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET) + 1;
-
- return parent_rate / (prediv * podf);
-}
-
-static int _clk_uart_set_parent(struct clk *clk, struct clk *parent)
-{
- u32 reg, mux;
-
- mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk,
- &lp_apm_clk);
- reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_UART_CLK_SEL_MASK;
- reg |= mux << MXC_CCM_CSCMR1_UART_CLK_SEL_OFFSET;
- __raw_writel(reg, MXC_CCM_CSCMR1);
-
- return 0;
-}
-
#define clk_nfc_set_parent NULL
static unsigned long clk_nfc_get_rate(struct clk *clk)
@@ -631,35 +602,6 @@ static int clk_nfc_set_rate(struct clk *clk, unsigned long rate)
return 0;
}
-static unsigned long clk_usboh3_get_rate(struct clk *clk)
-{
- u32 reg, prediv, podf;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- reg = __raw_readl(MXC_CCM_CSCDR1);
- prediv = ((reg & MXC_CCM_CSCDR1_USBOH3_CLK_PRED_MASK) >>
- MXC_CCM_CSCDR1_USBOH3_CLK_PRED_OFFSET) + 1;
- podf = ((reg & MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK) >>
- MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET) + 1;
-
- return parent_rate / (prediv * podf);
-}
-
-static int _clk_usboh3_set_parent(struct clk *clk, struct clk *parent)
-{
- u32 reg, mux;
-
- mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk,
- &lp_apm_clk);
- reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_USBOH3_CLK_SEL_MASK;
- reg |= mux << MXC_CCM_CSCMR1_USBOH3_CLK_SEL_OFFSET;
- __raw_writel(reg, MXC_CCM_CSCMR1);
-
- return 0;
-}
-
static unsigned long get_high_reference_clock_rate(struct clk *clk)
{
return external_high_reference;
@@ -786,18 +728,6 @@ static struct clk ipg_perclk = {
.set_parent = _clk_ipg_per_set_parent,
};
-static struct clk uart_root_clk = {
- .parent = &pll2_sw_clk,
- .get_rate = clk_uart_get_rate,
- .set_parent = _clk_uart_set_parent,
-};
-
-static struct clk usboh3_clk = {
- .parent = &pll2_sw_clk,
- .get_rate = clk_usboh3_get_rate,
- .set_parent = _clk_usboh3_set_parent,
-};
-
static struct clk ahb_max_clk = {
.parent = &ahb_clk,
.enable_reg = MXC_CCM_CCGR0,
@@ -857,35 +787,59 @@ static struct clk emi_slow_clk = {
.secondary = s, \
}
-/* eCSPI */
-static unsigned long clk_ecspi_get_rate(struct clk *clk)
-{
- u32 reg, pred, podf;
-
- reg = __raw_readl(MXC_CCM_CSCDR2);
-
- pred = (reg & MXC_CCM_CSCDR2_CSPI_CLK_PRED_MASK) >>
- MXC_CCM_CSCDR2_CSPI_CLK_PRED_OFFSET;
- podf = (reg & MXC_CCM_CSCDR2_CSPI_CLK_PODF_MASK) >>
- MXC_CCM_CSCDR2_CSPI_CLK_PODF_OFFSET;
-
- return DIV_ROUND_CLOSEST(clk_get_rate(clk->parent),
- (pred + 1) * (podf + 1));
+#define CLK_GET_RATE(name, nr, bitsname) \
+static unsigned long clk_##name##_get_rate(struct clk *clk) \
+{ \
+ u32 reg, pred, podf; \
+ \
+ reg = __raw_readl(MXC_CCM_CSCDR##nr); \
+ pred = (reg & MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK) \
+ >> MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET; \
+ podf = (reg & MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK) \
+ >> MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET; \
+ \
+ return DIV_ROUND_CLOSEST(clk_get_rate(clk->parent), \
+ (pred + 1) * (podf + 1)); \
+}
+
+#define CLK_SET_PARENT(name, nr, bitsname) \
+static int clk_##name##_set_parent(struct clk *clk, struct clk *parent) \
+{ \
+ u32 reg, mux; \
+ \
+ mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, \
+ &pll3_sw_clk, &lp_apm_clk); \
+ reg = __raw_readl(MXC_CCM_CSCMR##nr) & \
+ ~MXC_CCM_CSCMR##nr##_##bitsname##_CLK_SEL_MASK; \
+ reg |= mux << MXC_CCM_CSCMR##nr##_##bitsname##_CLK_SEL_OFFSET; \
+ __raw_writel(reg, MXC_CCM_CSCMR##nr); \
+ \
+ return 0; \
}
-static int clk_ecspi_set_parent(struct clk *clk, struct clk *parent)
-{
- u32 reg, mux;
+/* UART */
+CLK_GET_RATE(uart, 1, UART)
+CLK_SET_PARENT(uart, 1, UART)
- mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk,
- &lp_apm_clk);
+static struct clk uart_root_clk = {
+ .parent = &pll2_sw_clk,
+ .get_rate = clk_uart_get_rate,
+ .set_parent = clk_uart_set_parent,
+};
- reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_CSPI_CLK_SEL_MASK;
- reg |= mux << MXC_CCM_CSCMR1_CSPI_CLK_SEL_OFFSET;
- __raw_writel(reg, MXC_CCM_CSCMR1);
+/* USBOH3 */
+CLK_GET_RATE(usboh3, 1, USBOH3)
+CLK_SET_PARENT(usboh3, 1, USBOH3)
- return 0;
-}
+static struct clk usboh3_clk = {
+ .parent = &pll2_sw_clk,
+ .get_rate = clk_usboh3_get_rate,
+ .set_parent = clk_usboh3_set_parent,
+};
+
+/* eCSPI */
+CLK_GET_RATE(ecspi, 2, CSPI)
+CLK_SET_PARENT(ecspi, 1, CSPI)
static struct clk ecspi_main_clk = {
.parent = &pll3_sw_clk,
--
1.7.0.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/4] clock-mx51: rename CLOCK1 to CLOCK_CCGR for better readability
[not found] <20101012093225.GF29673@pengutronix.d>
2010-10-12 12:23 ` [PATCH 1/4] clock-mx51: factorize clk_set_parent and clk_get_rate Eric Bénard
@ 2010-10-12 12:23 ` Eric Bénard
2010-10-12 12:23 ` [PATCH 3/4] iomux-mx51: fix SD1 and SD2's iomux configuration Eric Bénard
2010-10-12 12:23 ` [PATCH 4/4] mx51: add resources for SD/MMC on i.MX51 Eric Bénard
3 siblings, 0 replies; 4+ messages in thread
From: Eric Bénard @ 2010-10-12 12:23 UTC (permalink / raw)
To: linux-arm-kernel
Signed-off-by: Eric B?nard <eric@eukrea.com>
---
arch/arm/mach-mx5/clock-mx51.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index 7deb683..9a39492 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -772,7 +772,7 @@ static struct clk emi_slow_clk = {
.get_rate = clk_emi_slow_get_rate,
};
-#define DEFINE_CLOCK1(name, i, er, es, pfx, p, s) \
+#define DEFINE_CLOCK_CCGR(name, i, er, es, pfx, p, s) \
static struct clk name = { \
.id = i, \
.enable_reg = er, \
@@ -900,7 +900,7 @@ DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET,
NULL, NULL, &ipg_clk, NULL);
/* NFC */
-DEFINE_CLOCK1(nfc_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG10_OFFSET,
+DEFINE_CLOCK_CCGR(nfc_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG10_OFFSET,
clk_nfc, &emi_slow_clk, NULL);
/* SSI */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 3/4] iomux-mx51: fix SD1 and SD2's iomux configuration
[not found] <20101012093225.GF29673@pengutronix.d>
2010-10-12 12:23 ` [PATCH 1/4] clock-mx51: factorize clk_set_parent and clk_get_rate Eric Bénard
2010-10-12 12:23 ` [PATCH 2/4] clock-mx51: rename CLOCK1 to CLOCK_CCGR for better readability Eric Bénard
@ 2010-10-12 12:23 ` Eric Bénard
2010-10-12 12:23 ` [PATCH 4/4] mx51: add resources for SD/MMC on i.MX51 Eric Bénard
3 siblings, 0 replies; 4+ messages in thread
From: Eric Bénard @ 2010-10-12 12:23 UTC (permalink / raw)
To: linux-arm-kernel
Based on original patch from: Richard Zhu <r65037@freescale.com>
Signed-off-by: Eric B?nard <eric@eukrea.com>
---
arch/arm/plat-mxc/include/mach/iomux-mx51.h | 39 ++++++++++++++++++--------
1 files changed, 27 insertions(+), 12 deletions(-)
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
index 5160f10..93141d1 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
@@ -47,6 +47,9 @@ typedef enum iomux_config {
PAD_CTL_SRE_FAST)
#define MX51_ECSPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PKE | PAD_CTL_DSE_HIGH | \
PAD_CTL_SRE_FAST)
+#define MX51_SDHCI_PAD_CTRL (PAD_CTL_DSE_HIGH | PAD_CTL_PUS_47K_UP | \
+ PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_SRE_FAST | \
+ PAD_CTL_DVS)
#define MX51_PAD_CTRL_1 (PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | \
PAD_CTL_PUE | PAD_CTL_PKE | PAD_CTL_HYS)
@@ -333,26 +336,38 @@ typedef enum iomux_config {
#define MX51_PAD_DISP2_DAT13__DISP2_DAT13 IOMUX_PAD(0x790, 0x388, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_DISP2_DAT14__DISP2_DAT14 IOMUX_PAD(0x794, 0x38C, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_DISP2_DAT15__DISP2_DAT15 IOMUX_PAD(0x798, 0x390, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD1_CMD__SD1_CMD IOMUX_PAD(0x79C, 0x394, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_SD1_CMD__SD1_CMD IOMUX_PAD(0x79C, 0x394, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
#define MX51_PAD_SD1_CMD__AUD5_RXFS IOMUX_PAD(0x79C, 0x394, 1, 0x8e0, 1, NO_PAD_CTRL)
-#define MX51_PAD_SD1_CLK__SD1_CLK IOMUX_PAD(0x7A0, 0x398, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_SD1_CLK__SD1_CLK IOMUX_PAD(0x7A0, 0x398, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL | PAD_CTL_HYS)
#define MX51_PAD_SD1_CLK__AUD5_RXC IOMUX_PAD(0x7A0, 0x398, 1, 0x8dc, 1, NO_PAD_CTRL)
-#define MX51_PAD_SD1_DATA0__SD1_DATA0 IOMUX_PAD(0x7A4, 0x39C, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_SD1_DATA0__SD1_DATA0 IOMUX_PAD(0x7A4, 0x39C, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
#define MX51_PAD_SD1_DATA0__AUD5_TXD IOMUX_PAD(0x7A4, 0x39C, 1, 0x8d8, 2, NO_PAD_CTRL)
-#define MX51_PAD_SD1_DATA1__SD1_DATA1 IOMUX_PAD(0x7A8, 0x3A0, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_SD1_DATA1__SD1_DATA1 IOMUX_PAD(0x7A8, 0x3A0, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
#define MX51_PAD_SD1_DATA1__AUD5_RXD IOMUX_PAD(0x7A8, 0x3A0, 1, 0x8d4, 2, NO_PAD_CTRL)
-#define MX51_PAD_SD1_DATA2__SD1_DATA2 IOMUX_PAD(0x7AC, 0x3A4, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_SD1_DATA2__SD1_DATA2 IOMUX_PAD(0x7AC, 0x3A4, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
#define MX51_PAD_SD1_DATA2__AUD5_TXC IOMUX_PAD(0x7AC, 0x3A4, 1, 0x8e4, 2, NO_PAD_CTRL)
-#define MX51_PAD_SD1_DATA3__SD1_DATA3 IOMUX_PAD(0x7B0, 0x3A8, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_SD1_DATA3__SD1_DATA3 IOMUX_PAD(0x7B0, 0x3A8, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
#define MX51_PAD_SD1_DATA3__AUD5_TXFS IOMUX_PAD(0x7B0, 0x3A8, 1, 0x8e8, 2, NO_PAD_CTRL)
+#define MX51_PAD_SD2_CMD__SD2_CMD IOMUX_PAD(0x7BC, 0x3B4, IOMUX_CONFIG_SION, 0x0, 1, \
+ MX51_SDHCI_PAD_CTRL)
+#define MX51_PAD_SD2_CLK__SD2_CLK IOMUX_PAD(0x7C0, 0x3B8, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL | PAD_CTL_HYS)
+#define MX51_PAD_SD2_DATA0__SD2_DATA0 IOMUX_PAD(0x7C4, 0x3BC, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
+#define MX51_PAD_SD2_DATA1__SD2_DATA1 IOMUX_PAD(0x7C8, 0x3C0, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
+#define MX51_PAD_SD2_DATA2__SD2_DATA2 IOMUX_PAD(0x7CC, 0x3C4, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
+#define MX51_PAD_SD2_DATA3__SD2_DATA3 IOMUX_PAD(0x7D0, 0x3C8, IOMUX_CONFIG_SION, 0x0, 0, \
+ MX51_SDHCI_PAD_CTRL)
#define MX51_PAD_GPIO_1_0__GPIO_1_0 IOMUX_PAD(0x7B4, 0x3AC, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_1_1__GPIO_1_1 IOMUX_PAD(0x7B8, 0x3B0, 1, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD2_CMD__SD2_CMD IOMUX_PAD(0x7BC, 0x3B4, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD2_CLK__SD2_CLK IOMUX_PAD(0x7C0, 0x3B8, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD2_DATA0__SD2_DATA0 IOMUX_PAD(0x7C4, 0x3BC, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD2_DATA1__SD2_DATA1 IOMUX_PAD(0x7C8, 0x3C0, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD2_DATA2__SD2_DATA2 IOMUX_PAD(0x7CC, 0x3C4, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_SD2_DATA3__SD2_DATA3 IOMUX_PAD(0x7D0, 0x3C8, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_1_2__GPIO_1_2 IOMUX_PAD(0x7D4, 0x3CC, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_1_2__I2C2_SCL IOMUX_PAD(0x7D4, 0x3CC, (2 | IOMUX_CONFIG_SION), \
0x9b8, 3, MX51_I2C_PAD_CTRL)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 4/4] mx51: add resources for SD/MMC on i.MX51
[not found] <20101012093225.GF29673@pengutronix.d>
` (2 preceding siblings ...)
2010-10-12 12:23 ` [PATCH 3/4] iomux-mx51: fix SD1 and SD2's iomux configuration Eric Bénard
@ 2010-10-12 12:23 ` Eric Bénard
3 siblings, 0 replies; 4+ messages in thread
From: Eric Bénard @ 2010-10-12 12:23 UTC (permalink / raw)
To: linux-arm-kernel
the attached patch allows SD to work on i.MX51 with Wolfram's drivers
Tested on i.MX51.
Based on original patch from: Richard Zhu <r65037@freescale.com>
Signed-off-by: Eric B?nard <eric@eukrea.com>
---
arch/arm/mach-mx5/clock-mx51.c | 104 +++++++++++++++++++++++++++++++++++++
arch/arm/mach-mx5/devices-imx51.h | 9 +++
2 files changed, 113 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index 9a39492..f2aae92 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -41,6 +41,36 @@ static struct clk usboh3_clk;
#define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */
+/* calculate best pre and post dividers to get the required divider */
+static void __calc_pre_post_dividers(u32 div, u32 *pre, u32 *post,
+ u32 max_pre, u32 max_post)
+{
+ if (div >= max_pre * max_post) {
+ *pre = max_pre;
+ *post = max_post;
+ } else if (div >= max_pre) {
+ u32 min_pre, temp_pre, old_err, err;
+ min_pre = DIV_ROUND_UP(div, max_post);
+ old_err = max_pre;
+ for (temp_pre = max_pre; temp_pre >= min_pre; temp_pre--) {
+ err = div % temp_pre;
+ if (err == 0) {
+ *pre = temp_pre;
+ break;
+ }
+ err = temp_pre - err;
+ if (err < old_err) {
+ old_err = err;
+ *pre = temp_pre;
+ }
+ }
+ *post = DIV_ROUND_UP(div, *pre);
+ } else {
+ *pre = div;
+ *post = 1;
+ }
+}
+
static void _clk_ccgr_setclk(struct clk *clk, unsigned mode)
{
u32 reg = __raw_readl(clk->enable_reg);
@@ -787,6 +817,20 @@ static struct clk emi_slow_clk = {
.secondary = s, \
}
+#define DEFINE_CLOCK_MAX(name, i, er, es, pfx, p, s) \
+ static struct clk name = { \
+ .id = i, \
+ .enable_reg = er, \
+ .enable_shift = es, \
+ .get_rate = pfx##_get_rate, \
+ .set_rate = pfx##_set_rate, \
+ .set_parent = pfx##_set_parent, \
+ .enable = _clk_max_enable, \
+ .disable = _clk_max_disable, \
+ .parent = p, \
+ .secondary = s, \
+ }
+
#define CLK_GET_RATE(name, nr, bitsname) \
static unsigned long clk_##name##_get_rate(struct clk *clk) \
{ \
@@ -817,6 +861,37 @@ static int clk_##name##_set_parent(struct clk *clk, struct clk *parent) \
return 0; \
}
+#define CLK_SET_RATE(name, nr, bitsname) \
+static int clk_##name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ u32 reg, div, parent_rate; \
+ u32 pre = 0, post = 0; \
+ \
+ parent_rate = clk_get_rate(clk->parent); \
+ div = parent_rate / rate; \
+ \
+ if ((parent_rate / div) != rate) \
+ return -EINVAL; \
+ \
+ __calc_pre_post_dividers(div, &pre, &post, \
+ (MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK >> \
+ MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET) + 1, \
+ (MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK >> \
+ MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET) + 1);\
+ \
+ /* Set sdhc1 clock divider */ \
+ reg = __raw_readl(MXC_CCM_CSCDR##nr) & \
+ ~(MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK \
+ | MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK); \
+ reg |= (post - 1) << \
+ MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET; \
+ reg |= (pre - 1) << \
+ MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET; \
+ __raw_writel(reg, MXC_CCM_CSCDR##nr); \
+ \
+ return 0; \
+}
+
/* UART */
CLK_GET_RATE(uart, 1, UART)
CLK_SET_PARENT(uart, 1, UART)
@@ -847,6 +922,15 @@ static struct clk ecspi_main_clk = {
.set_parent = clk_ecspi_set_parent,
};
+/* eSDHC */
+CLK_GET_RATE(esdhc1, 1, ESDHC1_MSHC1)
+CLK_SET_PARENT(esdhc1, 1, ESDHC1_MSHC1)
+CLK_SET_RATE(esdhc1, 1, ESDHC1_MSHC1)
+
+CLK_GET_RATE(esdhc2, 1, ESDHC2_MSHC2)
+CLK_SET_PARENT(esdhc2, 1, ESDHC2_MSHC2)
+CLK_SET_RATE(esdhc2, 1, ESDHC2_MSHC2)
+
#define DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, e, d, p, s) \
static struct clk name = { \
.id = i, \
@@ -935,6 +1019,16 @@ DEFINE_CLOCK(cspi_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG13_OFFSET,
DEFINE_CLOCK(sdma_clk, 1, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG15_OFFSET,
NULL, NULL, &ahb_clk, NULL);
+/* eSDHC */
+DEFINE_CLOCK_FULL(esdhc1_ipg_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG0_OFFSET,
+ NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL);
+DEFINE_CLOCK_MAX(esdhc1_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG1_OFFSET,
+ clk_esdhc1, &pll2_sw_clk, &esdhc1_ipg_clk);
+DEFINE_CLOCK_FULL(esdhc2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG2_OFFSET,
+ NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL);
+DEFINE_CLOCK_MAX(esdhc2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG3_OFFSET,
+ clk_esdhc2, &pll2_sw_clk, &esdhc2_ipg_clk);
+
#define _REGISTER_CLOCK(d, n, c) \
{ \
.dev_id = d, \
@@ -968,6 +1062,8 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("imx51-ecspi.0", NULL, ecspi1_clk)
_REGISTER_CLOCK("imx51-ecspi.1", NULL, ecspi2_clk)
_REGISTER_CLOCK("imx51-cspi.0", NULL, cspi_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk)
};
static void clk_tree_init(void)
@@ -1011,6 +1107,14 @@ int __init mx51_clocks_init(unsigned long ckil, unsigned long osc,
/* set the usboh3_clk parent to pll2_sw_clk */
clk_set_parent(&usboh3_clk, &pll2_sw_clk);
+ /* Set SDHC parents to be PLL2 */
+ clk_set_parent(&esdhc1_clk, &pll2_sw_clk);
+ clk_set_parent(&esdhc2_clk, &pll2_sw_clk);
+
+ /* set SDHC root clock as 166.25MHZ*/
+ clk_set_rate(&esdhc1_clk, 166250000);
+ clk_set_rate(&esdhc2_clk, 166250000);
+
/* System timer */
mxc_timer_init(&gpt_clk, MX51_IO_ADDRESS(MX51_GPT1_BASE_ADDR),
MX51_MXC_INT_GPT);
diff --git a/arch/arm/mach-mx5/devices-imx51.h b/arch/arm/mach-mx5/devices-imx51.h
index c233379..547432d 100644
--- a/arch/arm/mach-mx5/devices-imx51.h
+++ b/arch/arm/mach-mx5/devices-imx51.h
@@ -36,3 +36,12 @@ extern const struct imx_spi_imx_data imx51_cspi_data __initconst;
extern const struct imx_spi_imx_data imx51_ecspi_data[] __initconst;
#define imx51_add_ecspi(id, pdata) \
imx_add_spi_imx(&imx51_ecspi_data[id], pdata)
+
+#define imx51_add_esdhc0(pdata) \
+ imx_add_esdhc(0, MX51_MMC_SDHC1_BASE_ADDR, SZ_16K, MX51_MXC_INT_MMC_SDHC1, pdata)
+#define imx51_add_esdhc1(pdata) \
+ imx_add_esdhc(1, MX51_MMC_SDHC2_BASE_ADDR, SZ_16K, MX51_MXC_INT_MMC_SDHC2, pdata)
+#define imx51_add_esdhc2(pdata) \
+ imx_add_esdhc(2, MX51_MMC_SDHC3_BASE_ADDR, SZ_16K, MX51_MXC_INT_MMC_SDHC3, pdata)
+#define imx51_add_esdhc3(pdata) \
+ imx_add_esdhc(3, MX51_MMC_SDHC4_BASE_ADDR, SZ_16K, MX51_MXC_INT_MMC_SDHC4, pdata)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 4+ messages in thread