linux-kernel - Re: [PATCH] driver: input :touchscreen : add Raydium I2C touch driver

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Date:	Sun, 22 May 2016 17:35:42 +0800
From:	"jeffrey.lin" <yajohn@...il.com>
To:	dmitry.torokhov@...il.com, rydberg@...omail.se,
	grant.likely@...aro.org, robh+dt@...nel.org, jeesw@...fas.com,
	bleung@...omium.org
Cc:	jeffrey.lin@...-ic.com, roger.yang@...-ic.com, KP.li@...-ic.com,
	albert.shieh@...-ic.com, linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH] driver: input :touchscreen : add Raydium I2C touch driver

Hi Dmitry:

>> 		if (len < RM_BL_WRT_PKG_SIZE) {
>> 			buf[BL_PKG_IDX] = 4;

>Why 4???
4 is trigger index for write flash. Our page write size is 128 bytes, 
but in order to meet maximum I2C bus read/write byte limite and need 
fill full all pages of 128 bytes. So that I split 128 bytes to "4" 
section, and start burning flash if touch MCU get index "4".