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Subject: media: ccs-pll: Add support for extended input PLL clock divider Author: Sakari Ailus <[email protected]> Date: Tue Jun 23 13:40:32 2020 +0200 CCS allows odd PLL dividers other than 1, granted that the corresponding capability bit is set. Support this both in the PLL calculator and the CCS driver. Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/i2c/ccs-pll.c | 4 +++- drivers/media/i2c/ccs-pll.h | 1 + drivers/media/i2c/ccs/ccs-core.c | 3 +++ 3 files changed, 7 insertions(+), 1 deletion(-) --- diff --git a/drivers/media/i2c/ccs-pll.c b/drivers/media/i2c/ccs-pll.c index cb19a36e54df..62939ca5b8e2 100644 --- a/drivers/media/i2c/ccs-pll.c +++ b/drivers/media/i2c/ccs-pll.c @@ -478,7 +478,9 @@ int ccs_pll_calculate(struct device *dev, const struct ccs_pll_limits *lim, for (op_pll_fr->pre_pll_clk_div = min_op_pre_pll_clk_div; op_pll_fr->pre_pll_clk_div <= max_op_pre_pll_clk_div; - op_pll_fr->pre_pll_clk_div += 2 - (op_pll_fr->pre_pll_clk_div & 1)) { + op_pll_fr->pre_pll_clk_div += + (pll->flags & CCS_PLL_FLAG_EXT_IP_PLL_DIVIDER) ? 1 : + 2 - (op_pll_fr->pre_pll_clk_div & 1)) { rval = __ccs_pll_calculate(dev, lim, op_lim_fr, op_lim_bk, pll, op_pll_fr, op_pll_bk, mul, div); if (rval) diff --git a/drivers/media/i2c/ccs-pll.h b/drivers/media/i2c/ccs-pll.h index fe20af11a068..807ae7250aa2 100644 --- a/drivers/media/i2c/ccs-pll.h +++ b/drivers/media/i2c/ccs-pll.h @@ -25,6 +25,7 @@ /* CCS PLL flags */ #define CCS_PLL_FLAG_LANE_SPEED_MODEL BIT(2) #define CCS_PLL_FLAG_LINK_DECOUPLED BIT(3) +#define CCS_PLL_FLAG_EXT_IP_PLL_DIVIDER BIT(4) /** * struct ccs_pll_branch_fr - CCS PLL configuration (front) diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 855e51675864..6c2b8a4259fd 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -3219,6 +3219,9 @@ static int ccs_probe(struct i2c_client *client) sensor->pll.op_lanes = sensor->pll.csi2.lanes; } } + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_EXT_DIVIDER) + sensor->pll.flags |= CCS_PLL_FLAG_EXT_IP_PLL_DIVIDER; sensor->pll.ext_clk_freq_hz = sensor->hwcfg.ext_clk; sensor->pll.scale_n = CCS_LIM(sensor, SCALER_N_MIN); _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
