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Message-ID: <1443826665-17570-7-git-send-email-jonmason@broadcom.com>
Date: Fri, 2 Oct 2015 18:57:41 -0400
From: Jon Mason <jonmason@...adcom.com>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>
CC: Florian Fainelli <f.fainelli@...il.com>,
Hauke Mehrtens <hauke@...ke-m.de>, Ray Jui <rjui@...adcom.com>,
Scott Branden <sbranden@...adcom.com>,
<linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
<bcm-kernel-feedback-list@...adcom.com>
Subject: [PATCH 06/10] clk: iproc: Split off dig_filter
The PLL loop filter/gain can be located in a separate register on some
SoCs. Split these off into a separate variable, so that an offset can
be added if necessary. Also, make the necessary modifications to the
Cygnus and NSP drivers for this change.
Signed-off-by: Jon Mason <jonmason@...adcom.com>
---
drivers/clk/bcm/clk-cygnus.c | 17 +++++++++++------
drivers/clk/bcm/clk-iproc-pll.c | 14 +++++++++-----
drivers/clk/bcm/clk-iproc.h | 10 +++++++++-
drivers/clk/bcm/clk-nsp.c | 14 +++++++++-----
4 files changed, 38 insertions(+), 17 deletions(-)
diff --git a/drivers/clk/bcm/clk-cygnus.c b/drivers/clk/bcm/clk-cygnus.c
index 316c603..c526143 100644
--- a/drivers/clk/bcm/clk-cygnus.c
+++ b/drivers/clk/bcm/clk-cygnus.c
@@ -34,9 +34,11 @@
{ .offset = o, .en_shift = es, .high_shift = hs, \
.high_width = hw, .low_shift = ls, .low_width = lw }
-#define reset_val(o, rs, prs, kis, kiw, kps, kpw, kas, kaw) { .offset = o, \
- .reset_shift = rs, .p_reset_shift = prs, .ki_shift = kis, \
- .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \
+#define reset_val(o, rs, prs) { .offset = o, .reset_shift = rs, \
+ .p_reset_shift = prs }
+
+#define df_val(o, kis, kiw, kps, kpw, kas, kaw) { .offset = o, .ki_shift = kis,\
+ .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \
.ka_width = kaw }
#define vco_ctrl_val(uo, lo) { .u_offset = uo, .l_offset = lo }
@@ -56,7 +58,8 @@ static const struct iproc_pll_ctrl genpll = {
.flags = IPROC_CLK_AON | IPROC_CLK_PLL_HAS_NDIV_FRAC |
IPROC_CLK_PLL_NEEDS_SW_CFG,
.aon = aon_val(0x0, 2, 1, 0),
- .reset = reset_val(0x0, 11, 10, 4, 3, 0, 4, 7, 3),
+ .reset = reset_val(0x0, 11, 10),
+ .dig_filter = df_val(0x0, 4, 3, 0, 4, 7, 3),
.sw_ctrl = sw_ctrl_val(0x10, 31),
.ndiv_int = reg_val(0x10, 20, 10),
.ndiv_frac = reg_val(0x10, 0, 20),
@@ -114,7 +117,8 @@ CLK_OF_DECLARE(cygnus_genpll, "brcm,cygnus-genpll", cygnus_genpll_clk_init);
static const struct iproc_pll_ctrl lcpll0 = {
.flags = IPROC_CLK_AON | IPROC_CLK_PLL_NEEDS_SW_CFG,
.aon = aon_val(0x0, 2, 5, 4),
- .reset = reset_val(0x0, 31, 30, 27, 3, 23, 4, 19, 4),
+ .reset = reset_val(0x0, 31, 30),
+ .dig_filter = df_val(0x0, 27, 3, 23, 4, 19, 4),
.sw_ctrl = sw_ctrl_val(0x4, 31),
.ndiv_int = reg_val(0x4, 16, 10),
.pdiv = reg_val(0x4, 26, 4),
@@ -191,7 +195,8 @@ static const struct iproc_pll_ctrl mipipll = {
IPROC_CLK_NEEDS_READ_BACK,
.aon = aon_val(0x0, 4, 17, 16),
.asiu = asiu_gate_val(0x0, 3),
- .reset = reset_val(0x0, 11, 10, 4, 3, 0, 4, 7, 4),
+ .reset = reset_val(0x0, 11, 10),
+ .dig_filter = df_val(0x0, 4, 3, 0, 4, 7, 4),
.ndiv_int = reg_val(0x10, 20, 10),
.ndiv_frac = reg_val(0x10, 0, 20),
.pdiv = reg_val(0x14, 0, 4),
diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c
index a4602aa..882aced 100644
--- a/drivers/clk/bcm/clk-iproc-pll.c
+++ b/drivers/clk/bcm/clk-iproc-pll.c
@@ -224,13 +224,17 @@ static void __pll_bring_out_reset(struct iproc_pll *pll, unsigned int kp,
u32 val;
const struct iproc_pll_ctrl *ctrl = pll->ctrl;
const struct iproc_pll_reset_ctrl *reset = &ctrl->reset;
+ const struct iproc_pll_dig_filter_ctrl *dig_filter = &ctrl->dig_filter;
+
+ val = readl(pll->pll_base + dig_filter->offset);
+ val &= ~(bit_mask(dig_filter->ki_width) << dig_filter->ki_shift |
+ bit_mask(dig_filter->kp_width) << dig_filter->kp_shift |
+ bit_mask(dig_filter->ka_width) << dig_filter->ka_shift);
+ val |= ki << dig_filter->ki_shift | kp << dig_filter->kp_shift |
+ ka << dig_filter->ka_shift;
+ iproc_pll_write(pll, pll->pll_base, dig_filter->offset, val);
val = readl(pll->pll_base + reset->offset);
- val &= ~(bit_mask(reset->ki_width) << reset->ki_shift |
- bit_mask(reset->kp_width) << reset->kp_shift |
- bit_mask(reset->ka_width) << reset->ka_shift);
- val |= ki << reset->ki_shift | kp << reset->kp_shift |
- ka << reset->ka_shift;
val |= 1 << reset->reset_shift | 1 << reset->p_reset_shift;
iproc_pll_write(pll, pll->pll_base, reset->offset, val);
}
diff --git a/drivers/clk/bcm/clk-iproc.h b/drivers/clk/bcm/clk-iproc.h
index ff7bfad..b71c197 100644
--- a/drivers/clk/bcm/clk-iproc.h
+++ b/drivers/clk/bcm/clk-iproc.h
@@ -94,12 +94,19 @@ struct iproc_pll_aon_pwr_ctrl {
};
/*
- * Control of the PLL reset, with Ki, Kp, and Ka parameters
+ * Control of the PLL reset
*/
struct iproc_pll_reset_ctrl {
unsigned int offset;
unsigned int reset_shift;
unsigned int p_reset_shift;
+};
+
+/*
+ * Control of the Ki, Kp, and Ka parameters
+ */
+struct iproc_pll_dig_filter_ctrl {
+ unsigned int offset;
unsigned int ki_shift;
unsigned int ki_width;
unsigned int kp_shift;
@@ -129,6 +136,7 @@ struct iproc_pll_ctrl {
struct iproc_pll_aon_pwr_ctrl aon;
struct iproc_asiu_gate asiu;
struct iproc_pll_reset_ctrl reset;
+ struct iproc_pll_dig_filter_ctrl dig_filter;
struct iproc_pll_sw_ctrl sw_ctrl;
struct iproc_clk_reg_op ndiv_int;
struct iproc_clk_reg_op ndiv_frac;
diff --git a/drivers/clk/bcm/clk-nsp.c b/drivers/clk/bcm/clk-nsp.c
index 708961a..4fc4b1d 100644
--- a/drivers/clk/bcm/clk-nsp.c
+++ b/drivers/clk/bcm/clk-nsp.c
@@ -28,9 +28,11 @@
#define aon_val(o, pw, ps, is) { .offset = o, .pwr_width = pw, \
.pwr_shift = ps, .iso_shift = is }
-#define reset_val(o, rs, prs, kis, kiw, kps, kpw, kas, kaw) { .offset = o, \
- .reset_shift = rs, .p_reset_shift = prs, .ki_shift = kis, \
- .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \
+#define reset_val(o, rs, prs) { .offset = o, .reset_shift = rs, \
+ .p_reset_shift = prs }
+
+#define df_val(o, kis, kiw, kps, kpw, kas, kaw) { .offset = o, .ki_shift = kis,\
+ .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \
.ka_width = kaw }
#define vco_ctrl_val(uo, lo) { .u_offset = uo, .l_offset = lo }
@@ -47,7 +49,8 @@ CLK_OF_DECLARE(nsp_armpll, "brcm,nsp-armpll", nsp_armpll_init);
static const struct iproc_pll_ctrl genpll = {
.flags = IPROC_CLK_PLL_HAS_NDIV_FRAC | IPROC_CLK_EMBED_PWRCTRL,
.aon = aon_val(0x0, 1, 12, 0),
- .reset = reset_val(0x0, 11, 10, 4, 3, 0, 4, 7, 3),
+ .reset = reset_val(0x0, 11, 10),
+ .dig_filter = df_val(0x0, 4, 3, 0, 4, 7, 3),
.ndiv_int = reg_val(0x14, 20, 10),
.ndiv_frac = reg_val(0x14, 0, 20),
.pdiv = reg_val(0x18, 24, 3),
@@ -103,7 +106,8 @@ CLK_OF_DECLARE(nsp_genpll_clk, "brcm,nsp-genpll", nsp_genpll_clk_init);
static const struct iproc_pll_ctrl lcpll0 = {
.flags = IPROC_CLK_PLL_HAS_NDIV_FRAC | IPROC_CLK_EMBED_PWRCTRL,
.aon = aon_val(0x0, 1, 24, 0),
- .reset = reset_val(0x0, 23, 22, 16, 3, 12, 4, 19, 4),
+ .reset = reset_val(0x0, 23, 22),
+ .dig_filter = df_val(0x0, 16, 3, 12, 4, 19, 4),
.ndiv_int = reg_val(0x4, 20, 8),
.ndiv_frac = reg_val(0x4, 0, 20),
.pdiv = reg_val(0x4, 28, 3),
--
1.9.1
--
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