lkml.org 
[lkml]   [2019]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/5] clk: rockchip: Add div50 clocks for px30 sdmmc, emmc, sdio and nandc
Date
From: Finley Xiao <finley.xiao@rock-chips.com>

Some IPs, such as NAND, EMMC, SDIO and SDMMC need clock of 50% duty
cycle, divfree50 can generate clock of 50% duty cycle even in odd
value divisor.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
drivers/clk/rockchip/clk-px30.c | 44 ++++++++++++++++++++++++++++++---
1 file changed, 40 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/rockchip/clk-px30.c b/drivers/clk/rockchip/clk-px30.c
index 3a501896b280..a973394f3d65 100644
--- a/drivers/clk/rockchip/clk-px30.c
+++ b/drivers/clk/rockchip/clk-px30.c
@@ -167,6 +167,10 @@ PNAME(mux_uart5_p) = { "clk_uart5_src", "clk_uart5_np5", "clk_uart5_frac" };
PNAME(mux_cif_out_p) = { "xin24m", "dummy_cpll", "npll", "usb480m" };
PNAME(mux_dclk_vopb_p) = { "dclk_vopb_src", "dclk_vopb_frac", "xin24m" };
PNAME(mux_dclk_vopl_p) = { "dclk_vopl_src", "dclk_vopl_frac", "xin24m" };
+PNAME(mux_nandc_p) = { "clk_nandc_div", "clk_nandc_div50" };
+PNAME(mux_sdio_p) = { "clk_sdio_div", "clk_sdio_div50" };
+PNAME(mux_emmc_p) = { "clk_emmc_div", "clk_emmc_div50" };
+PNAME(mux_sdmmc_p) = { "clk_sdmmc_div", "clk_sdmmc_div50" };
PNAME(mux_gmac_p) = { "clk_gmac_src", "gmac_clkin" };
PNAME(mux_gmac_rmii_sel_p) = { "clk_gmac_rx_tx_div20", "clk_gmac_rx_tx_div2" };
PNAME(mux_rtc32k_pmu_p) = { "xin32k", "pmu_pvtm_32k", "clk_rtc32k_frac", };
@@ -460,16 +464,40 @@ static struct rockchip_clk_branch px30_clk_branches[] __initdata = {
/* PD_MMC_NAND */
GATE(HCLK_MMC_NAND, "hclk_mmc_nand", "hclk_peri_pre", 0,
PX30_CLKGATE_CON(6), 0, GFLAGS),
- COMPOSITE(SCLK_NANDC, "clk_nandc", mux_gpll_cpll_npll_p, 0,
+ COMPOSITE(SCLK_NANDC_DIV, "clk_nandc_div", mux_gpll_cpll_npll_p, 0,
PX30_CLKSEL_CON(15), 6, 2, MFLAGS, 0, 5, DFLAGS,
+ PX30_CLKGATE_CON(5), 11, GFLAGS),
+ COMPOSITE(SCLK_NANDC_DIV50, "clk_nandc_div50", mux_gpll_cpll_npll_p, 0,
+ PX30_CLKSEL_CON(15), 6, 2, MFLAGS, 8, 5, DFLAGS,
+ PX30_CLKGATE_CON(5), 12, GFLAGS),
+ COMPOSITE_NODIV(SCLK_NANDC, "clk_nandc", mux_nandc_p,
+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+ PX30_CLKSEL_CON(15), 15, 1, MFLAGS,
PX30_CLKGATE_CON(5), 13, GFLAGS),

- COMPOSITE(SCLK_SDIO, "clk_sdio", mux_gpll_cpll_npll_xin24m_p, 0,
+ COMPOSITE(SCLK_SDIO_DIV, "clk_sdio_div", mux_gpll_cpll_npll_xin24m_p, 0,
PX30_CLKSEL_CON(18), 14, 2, MFLAGS, 0, 8, DFLAGS,
+ PX30_CLKGATE_CON(6), 1, GFLAGS),
+ COMPOSITE_DIV_OFFSET(SCLK_SDIO_DIV50, "clk_sdio_div50",
+ mux_gpll_cpll_npll_xin24m_p, 0,
+ PX30_CLKSEL_CON(18), 14, 2, MFLAGS,
+ PX30_CLKSEL_CON(19), 0, 8, DFLAGS,
+ PX30_CLKGATE_CON(6), 2, GFLAGS),
+ COMPOSITE_NODIV(SCLK_SDIO, "clk_sdio", mux_sdio_p,
+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+ PX30_CLKSEL_CON(19), 15, 1, MFLAGS,
PX30_CLKGATE_CON(6), 3, GFLAGS),

- COMPOSITE(SCLK_EMMC, "clk_emmc", mux_gpll_cpll_npll_xin24m_p, 0,
+ COMPOSITE(SCLK_EMMC_DIV, "clk_emmc_div", mux_gpll_cpll_npll_xin24m_p, 0,
PX30_CLKSEL_CON(20), 14, 2, MFLAGS, 0, 8, DFLAGS,
+ PX30_CLKGATE_CON(6), 4, GFLAGS),
+ COMPOSITE_DIV_OFFSET(SCLK_EMMC_DIV50, "clk_emmc_div50", mux_gpll_cpll_npll_xin24m_p, 0,
+ PX30_CLKSEL_CON(20), 14, 2, MFLAGS,
+ PX30_CLKSEL_CON(21), 0, 8, DFLAGS,
+ PX30_CLKGATE_CON(6), 5, GFLAGS),
+ COMPOSITE_NODIV(SCLK_EMMC, "clk_emmc", mux_emmc_p,
+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+ PX30_CLKSEL_CON(21), 15, 1, MFLAGS,
PX30_CLKGATE_CON(6), 6, GFLAGS),

COMPOSITE(SCLK_SFC, "clk_sfc", mux_gpll_cpll_p, 0,
@@ -494,8 +522,16 @@ static struct rockchip_clk_branch px30_clk_branches[] __initdata = {
/* PD_SDCARD */
GATE(0, "hclk_sdmmc_pre", "hclk_peri_pre", 0,
PX30_CLKGATE_CON(6), 12, GFLAGS),
- COMPOSITE(SCLK_SDMMC, "clk_sdmmc", mux_gpll_cpll_npll_xin24m_p, 0,
+ COMPOSITE(SCLK_SDMMC_DIV, "clk_sdmmc_div", mux_gpll_cpll_npll_xin24m_p, 0,
PX30_CLKSEL_CON(16), 14, 2, MFLAGS, 0, 8, DFLAGS,
+ PX30_CLKGATE_CON(6), 13, GFLAGS),
+ COMPOSITE_DIV_OFFSET(SCLK_SDMMC_DIV50, "clk_sdmmc_div50", mux_gpll_cpll_npll_xin24m_p, 0,
+ PX30_CLKSEL_CON(16), 14, 2, MFLAGS,
+ PX30_CLKSEL_CON(17), 0, 8, DFLAGS,
+ PX30_CLKGATE_CON(6), 14, GFLAGS),
+ COMPOSITE_NODIV(SCLK_SDMMC, "clk_sdmmc", mux_sdmmc_p,
+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+ PX30_CLKSEL_CON(17), 15, 1, MFLAGS,
PX30_CLKGATE_CON(6), 15, GFLAGS),

/* PD_USB */
--
2.20.1
\
 
 \ /
  Last update: 2019-09-17 10:19    [W:0.047 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site